6459771897654 has 64 divisors (see below), whose sum is σ = 13363217713152. Its totient is φ = 2079595526400.

The previous prime is 6459771897653. The next prime is 6459771897659. The reversal of 6459771897654 is 4567981779546.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6459771897654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6459771897653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241229914 + ... + 241256690.

It is an arithmetic number, because the mean of its divisors is an integer number (208800276768).

Almost surely, 2^{6459771897654} is an apocalyptic number.

6459771897654 is an abundant number, since it is smaller than the sum of its proper divisors (6903445815498).

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

6459771897654 is a wasteful number, since it uses less digits than its factorization.

6459771897654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29381.

The product of its digits is 3200601600, while the sum is 78.

The spelling of 6459771897654 in words is "six trillion, four hundred fifty-nine billion, seven hundred seventy-one million, eight hundred ninety-seven thousand, six hundred fifty-four".