256700447792 has 20 divisors (see below), whose sum is σ = 502281448656. Its totient is φ = 127079428800.

The previous prime is 256700447761. The next prime is 256700447833. The reversal of 256700447792 is 297744007652.

It is a happy number.

256700447792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256700447792² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79423028 + ... + 79426259.

Almost surely, 2^256700447792 is an apocalyptic number.

It is an amenable number.

256700447792 is a deficient number, since it is larger than the sum of its proper divisors (245581000864).

256700447792 is a wasteful number, since it uses less digits than its factorization.

256700447792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158849396 (or 158849390 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 256700447792 in words is "two hundred fifty-six billion, seven hundred million, four hundred forty-seven thousand, seven hundred ninety-two".