256472552619 has 48 divisors (see below), whose sum is σ = 402655052800. Its totient is φ = 156711672000.

The previous prime is 256472552617. The next prime is 256472552621. The reversal of 256472552619 is 916255274652.

256472552619 is a `hidden beast` number, since 2 + 5 + 6 + 4 + 72 + 552 + 6 + 19 = 666.

It is an interprime number because it is at equal distance from previous prime (256472552617) and next prime (256472552621).

It is not a de Polignac number, because 256472552619 - 2¹ = 256472552617 is a prime.

It is a super-2 number, since 2×256472552619² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256472552617) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 31012017 + ... + 31020285.

Almost surely, 2^256472552619 is an apocalyptic number.

256472552619 is a deficient number, since it is larger than the sum of its proper divisors (146182500181).

256472552619 is a wasteful number, since it uses less digits than its factorization.

256472552619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14176 (or 14173 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The spelling of 256472552619 in words is "two hundred fifty-six billion, four hundred seventy-two million, five hundred fifty-two thousand, six hundred nineteen".