256538084546 has 8 divisors (see below), whose sum is σ = 392994512640. Its totient is φ = 125539913668.

The previous prime is 256538084533. The next prime is 256538084557. The reversal of 256538084546 is 645480835652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-5 number, since 5×256538084546⁵ (a number of 58 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 256538084491 and 256538084500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364564186 + ... + 1364564373.

It is an arithmetic number, because the mean of its divisors is an integer number (49124314080).

Almost surely, 2^256538084546 is an apocalyptic number.

256538084546 is a deficient number, since it is larger than the sum of its proper divisors (136456428094).

256538084546 is a wasteful number, since it uses less digits than its factorization.

256538084546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729128608.

The product of its (nonzero) digits is 27648000, while the sum is 56.

The spelling of 256538084546 in words is "two hundred fifty-six billion, five hundred thirty-eight million, eighty-four thousand, five hundred forty-six".