253641545454 has 64 divisors (see below), whose sum is σ = 557688602880. Its totient is φ = 76265905920.

The previous prime is 253641545449. The next prime is 253641545477. The reversal of 253641545454 is 454545146352.

It is a super-2 number, since 2×253641545454² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26298357 + ... + 26307999.

It is an arithmetic number, because the mean of its divisors is an integer number (8713884420).

Almost surely, 2^253641545454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253641545454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278844301440).

253641545454 is an abundant number, since it is smaller than the sum of its proper divisors (304047057426).

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

253641545454 is a wasteful number, since it uses less digits than its factorization.

253641545454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12705.

The product of its digits is 5760000, while the sum is 48.

The spelling of 253641545454 in words is "two hundred fifty-three billion, six hundred forty-one million, five hundred forty-five thousand, four hundred fifty-four".