651438253475 has 36 divisors (see below), whose sum is σ = 864070149096. Its totient is φ = 486898621440.

The previous prime is 651438253447. The next prime is 651438253489. The reversal of 651438253475 is 574352834156.

It is not a de Polignac number, because 651438253475 - 2²⁴ = 651421476259 is a prime.

It is a super-4 number, since 4×651438253475⁴ (a number of 48 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4094 + ... + 1141443.

It is an arithmetic number, because the mean of its divisors is an integer number (24001948586).

Almost surely, 2^651438253475 is an apocalyptic number.

651438253475 is a deficient number, since it is larger than the sum of its proper divisors (212631895621).

651438253475 is a wasteful number, since it uses less digits than its factorization.

651438253475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145636 (or 1145608 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 53.

The spelling of 651438253475 in words is "six hundred fifty-one billion, four hundred thirty-eight million, two hundred fifty-three thousand, four hundred seventy-five".