256264633212 has 24 divisors (see below), whose sum is σ = 683372355456. Its totient is φ = 73218466608.

The previous prime is 256264633193. The next prime is 256264633217. The reversal of 256264633212 is 212336462652.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256264633217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1525384638 + ... + 1525384805.

It is an arithmetic number, because the mean of its divisors is an integer number (28473848144).

Almost surely, 2^256264633212 is an apocalyptic number.

It is an amenable number.

256264633212 is an abundant number, since it is smaller than the sum of its proper divisors (427107722244).

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

256264633212 is a wasteful number, since it uses less digits than its factorization.

256264633212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050769457 (or 3050769455 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

The spelling of 256264633212 in words is "two hundred fifty-six billion, two hundred sixty-four million, six hundred thirty-three thousand, two hundred twelve".