256648707846652 has 36 divisors (see below), whose sum is σ = 510700941190440. Its totient is φ = 112635796540960.

The previous prime is 256648707846647. The next prime is 256648707846689.

256648707846652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×256648707846652² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9142501918 + ... + 9142529989.

It is an arithmetic number, because the mean of its divisors is an integer number (14186137255290).

Almost surely, 2^{256648707846652} is an apocalyptic number.

256648707846652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256648707846652 is a deficient number, since it is larger than the sum of its proper divisors (254052233343788).

256648707846652 is a wasteful number, since it uses less digits than its factorization.

256648707846652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18285031962 (or 18285031949 counting only the distinct ones).

The product of its (nonzero) digits is 6502809600, while the sum is 76.

The spelling of 256648707846652 in words is "two hundred fifty-six trillion, six hundred forty-eight billion, seven hundred seven million, eight hundred forty-six thousand, six hundred fifty-two".