651460970138 has 32 divisors (see below), whose sum is σ = 1112438057472. Its totient is φ = 283228110000.

The previous prime is 651460970123. The next prime is 651460970143. The reversal of 651460970138 is 831079064156.

651460970138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×651460970138² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17818745 + ... + 17855267.

It is an arithmetic number, because the mean of its divisors is an integer number (34763689296).

Almost surely, 2^651460970138 is an apocalyptic number.

651460970138 is a deficient number, since it is larger than the sum of its proper divisors (460977087334).

651460970138 is a wasteful number, since it uses less digits than its factorization.

651460970138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71810.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 651460970138 in words is "six hundred fifty-one billion, four hundred sixty million, nine hundred seventy thousand, one hundred thirty-eight".