4972161256 has 8 divisors (see below), whose sum is σ = 9322802370. Its totient is φ = 2486080624.

The previous prime is 4972161217. The next prime is 4972161263. The reversal of 4972161256 is 6521612794.

It can be written as a sum of positive squares in only one way, i.e., 4309922500 + 662238756 = 65650^2 + 25734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310760071 + ... + 310760086.

Almost surely, 2^4972161256 is an apocalyptic number.

It is an amenable number.

4972161256 is a deficient number, since it is larger than the sum of its proper divisors (4350641114).

4972161256 is a wasteful number, since it uses less digits than its factorization.

4972161256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621520163 (or 621520159 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 4972161256 is about 70513.5537042348. The cubic root of 4972161256 is about 1706.7964663310.

The spelling of 4972161256 in words is "four billion, nine hundred seventy-two million, one hundred sixty-one thousand, two hundred fifty-six".