256154895351 has 12 divisors (see below), whose sum is σ = 372358215112. Its totient is φ = 169682222736.

The previous prime is 256154895287. The next prime is 256154895389. The reversal of 256154895351 is 153598451652.

256154895351 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 548 + 95 + 3 + 5 + 1 = 666.

It is not a de Polignac number, because 256154895351 - 2⁶ = 256154895287 is a prime.

It is a super-2 number, since 2×256154895351² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256154895551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90640801 + ... + 90643626.

Almost surely, 2^256154895351 is an apocalyptic number.

256154895351 is a deficient number, since it is larger than the sum of its proper divisors (116203319761).

256154895351 is a wasteful number, since it uses less digits than its factorization.

256154895351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181284590 (or 181284587 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 54.

The spelling of 256154895351 in words is "two hundred fifty-six billion, one hundred fifty-four million, eight hundred ninety-five thousand, three hundred fifty-one".