53391033723 has 4 divisors (see below), whose sum is σ = 71188044968. Its totient is φ = 35594022480.

The previous prime is 53391033691. The next prime is 53391033737. The reversal of 53391033723 is 32733019335.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 53391033723 - 2⁵ = 53391033691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53391033743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8898505618 + ... + 8898505623.

It is an arithmetic number, because the mean of its divisors is an integer number (17797011242).

Almost surely, 2^53391033723 is an apocalyptic number.

53391033723 is a deficient number, since it is larger than the sum of its proper divisors (17797011245).

53391033723 is a wasteful number, since it uses less digits than its factorization.

53391033723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17797011244.

The product of its (nonzero) digits is 153090, while the sum is 39.

The spelling of 53391033723 in words is "fifty-three billion, three hundred ninety-one million, thirty-three thousand, seven hundred twenty-three".