7981279201 has 6 divisors (see below), whose sum is σ = 9284345250. Its totient is φ = 6841096416.

The previous prime is 7981279171. The next prime is 7981279211. The reversal of 7981279201 is 1029721897.

It can be written as a sum of positive squares in only one way, i.e., 7695500176 + 285779025 = 87724^2 + 16905^2 .

It is not a de Polignac number, because 7981279201 - 2¹⁵ = 7981246433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7981279211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81441576 + ... + 81441673.

It is an arithmetic number, because the mean of its divisors is an integer number (1547390875).

Almost surely, 2^7981279201 is an apocalyptic number.

It is an amenable number.

7981279201 is a deficient number, since it is larger than the sum of its proper divisors (1303066049).

7981279201 is a wasteful number, since it uses less digits than its factorization.

7981279201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162883263 (or 162883256 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 7981279201 is about 89338.0053560633. The cubic root of 7981279201 is about 1998.4387149283.

The spelling of 7981279201 in words is "seven billion, nine hundred eighty-one million, two hundred seventy-nine thousand, two hundred one".