651795258240 has 1280 divisors, whose sum is σ = 2774106403200. Its totient is φ = 142690222080.

The previous prime is 651795258227. The next prime is 651795258251. The reversal of 651795258240 is 42852597156.

651795258240 is a `hidden beast` number, since 6 + 5 + 1 + 7 + 9 + 52 + 582 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2536168192 + ... + 2536168448.

Almost surely, 2^651795258240 is an apocalyptic number.

651795258240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651795258240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1387053201600).

651795258240 is an abundant number, since it is smaller than the sum of its proper divisors (2122311144960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651795258240 is a wasteful number, since it uses less digits than its factorization.

651795258240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 651795258240 in words is "six hundred fifty-one billion, seven hundred ninety-five million, two hundred fifty-eight thousand, two hundred forty".