53721670372 has 12 divisors (see below), whose sum is σ = 94030252540. Its totient is φ = 26855883936.

The previous prime is 53721670367. The next prime is 53721670411. The reversal of 53721670372 is 27307612735.

It can be written as a sum of positive squares in 2 ways, for example, as 15998708196 + 37722962176 = 126486^2 + 194224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213347 + ... + 1256842.

Almost surely, 2^53721670372 is an apocalyptic number.

It is an amenable number.

53721670372 is a deficient number, since it is larger than the sum of its proper divisors (40308582168).

53721670372 is a wasteful number, since it uses less digits than its factorization.

53721670372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475630 (or 2475628 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 43.

The spelling of 53721670372 in words is "fifty-three billion, seven hundred twenty-one million, six hundred seventy thousand, three hundred seventy-two".