256477035566076 has 96 divisors (see below), whose sum is σ = 665293351661568. Its totient is φ = 76367705057280.

The previous prime is 256477035566053. The next prime is 256477035566093. The reversal of 256477035566076 is 670665530774652.

It is a self number, because there is not a number n which added to its sum of digits gives 256477035566076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141943161 + ... + 143738703.

It is an arithmetic number, because the mean of its divisors is an integer number (6930139079808).

Almost surely, 2^{256477035566076} is an apocalyptic number.

256477035566076 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

256477035566076 is an abundant number, since it is smaller than the sum of its proper divisors (408816316095492).

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

256477035566076 is a wasteful number, since it uses less digits than its factorization.

256477035566076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825131 (or 1825129 counting only the distinct ones).

The product of its (nonzero) digits is 1333584000, while the sum is 69.

The spelling of 256477035566076 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, thirty-five million, five hundred sixty-six thousand, seventy-six".