256970882949 has 8 divisors (see below), whose sum is σ = 373775829792. Its totient is φ = 155739929040.

The previous prime is 256970882939. The next prime is 256970882953. The reversal of 256970882949 is 949288079652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256970882949 - 2²¹ = 256968785797 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256970882939) 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, 3893498194 + ... + 3893498259.

It is an arithmetic number, because the mean of its divisors is an integer number (46721978724).

Almost surely, 2^256970882949 is an apocalyptic number.

It is an amenable number.

256970882949 is a deficient number, since it is larger than the sum of its proper divisors (116804946843).

256970882949 is a wasteful number, since it uses less digits than its factorization.

256970882949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7786996467.

The product of its (nonzero) digits is 156764160, while the sum is 69.

The spelling of 256970882949 in words is "two hundred fifty-six billion, nine hundred seventy million, eight hundred eighty-two thousand, nine hundred forty-nine".