53121673811 has 12 divisors (see below), whose sum is σ = 57873253824. Its totient is φ = 48702373200.

The previous prime is 53121673807. The next prime is 53121673823. The reversal of 53121673811 is 11837612135.

53121673811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53121673811 - 2² = 53121673807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53121673211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2362220 + ... + 2384601.

It is an arithmetic number, because the mean of its divisors is an integer number (4822771152).

Almost surely, 2^53121673811 is an apocalyptic number.

53121673811 is a deficient number, since it is larger than the sum of its proper divisors (4751580013).

53121673811 is a wasteful number, since it uses less digits than its factorization.

53121673811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746890 (or 4746871 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The spelling of 53121673811 in words is "fifty-three billion, one hundred twenty-one million, six hundred seventy-three thousand, eight hundred eleven".