771211610256 has 40 divisors (see below), whose sum is σ = 1992363400224. Its totient is φ = 257061925120.

The previous prime is 771211610227. The next prime is 771211610339. The reversal of 771211610256 is 652016112177.

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 7 ways as a sum of consecutive naturals, for example, 1269355 + ... + 1775861.

Almost surely, 2^771211610256 is an apocalyptic number.

It is an amenable number.

771211610256 is an abundant number, since it is smaller than the sum of its proper divisors (1221151789968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

771211610256 is a wasteful number, since it uses less digits than its factorization.

771211610256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538239 (or 538233 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 771211610256 in words is "seven hundred seventy-one billion, two hundred eleven million, six hundred ten thousand, two hundred fifty-six".