256622401540105 has 48 divisors (see below), whose sum is σ = 331396011562752. Its totient is φ = 190271593036800.

The previous prime is 256622401540073. The next prime is 256622401540157. The reversal of 256622401540105 is 501045104226652.

It is a happy number.

It is not a de Polignac number, because 256622401540105 - 2⁵ = 256622401540073 is a prime.

It is a super-2 number, since 2×256622401540105² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246615460 + ... + 247653850.

It is an arithmetic number, because the mean of its divisors is an integer number (6904083574224).

Almost surely, 2^{256622401540105} is an apocalyptic number.

It is an amenable number.

256622401540105 is a deficient number, since it is larger than the sum of its proper divisors (74773610022647).

256622401540105 is a wasteful number, since it uses less digits than its factorization.

256622401540105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038938 (or 1038697 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

Adding to 256622401540105 its reverse (501045104226652), we get a palindrome (757667505766757).

The spelling of 256622401540105 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, four hundred one million, five hundred forty thousand, one hundred five".