53721536738 has 16 divisors (see below), whose sum is σ = 87559722240. Its totient is φ = 24626170800.

The previous prime is 53721536723. The next prime is 53721536761. The reversal of 53721536738 is 83763512735.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22800833 + ... + 22803188.

It is an arithmetic number, because the mean of its divisors is an integer number (5472482640).

Almost surely, 2^53721536738 is an apocalyptic number.

53721536738 is a deficient number, since it is larger than the sum of its proper divisors (33838185502).

53721536738 is a wasteful number, since it uses less digits than its factorization.

53721536738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45604073.

The product of its digits is 3175200, while the sum is 50.

The spelling of 53721536738 in words is "fifty-three billion, seven hundred twenty-one million, five hundred thirty-six thousand, seven hundred thirty-eight".