1256980922288 has 80 divisors (see below), whose sum is σ = 3023942246976. Its totient is φ = 492866519040.

The previous prime is 1256980922287. The next prime is 1256980922291. The reversal of 1256980922288 is 8822290896521.

It is a self number, because there is not a number n which added to its sum of digits gives 1256980922288.

It is not an unprimeable number, because it can be changed into a prime (1256980922287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3655433 + ... + 3984488.

Almost surely, 2^{1256980922288} is an apocalyptic number.

It is an amenable number.

1256980922288 is an abundant number, since it is smaller than the sum of its proper divisors (1766961324688).

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

1256980922288 is a wasteful number, since it uses less digits than its factorization.

1256980922288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640062 (or 7640056 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 62.

The spelling of 1256980922288 in words is "one trillion, two hundred fifty-six billion, nine hundred eighty million, nine hundred twenty-two thousand, two hundred eighty-eight".