651052043172 has 48 divisors (see below), whose sum is σ = 1742361510400. Its totient is φ = 210016787040.

The previous prime is 651052043129. The next prime is 651052043219. The reversal of 651052043172 is 271340250156.

651052043172 is a `hidden beast` number, since 65 + 1 + 0 + 520 + 4 + 3 + 1 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 97226647 + ... + 97233342.

Almost surely, 2^651052043172 is an apocalyptic number.

651052043172 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

651052043172 is an abundant number, since it is smaller than the sum of its proper divisors (1091309467228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651052043172 is a wasteful number, since it uses less digits than its factorization.

651052043172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194460033 (or 194460025 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 651052043172 in words is "six hundred fifty-one billion, fifty-two million, forty-three thousand, one hundred seventy-two".