83653715121 has 4 divisors (see below), whose sum is σ = 111538286832. Its totient is φ = 55769143412.

The previous prime is 83653715053. The next prime is 83653715149. The reversal of 83653715121 is 12151735638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83653715121 - 2²² = 83649520817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83653755121) 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, 13942285851 + ... + 13942285856.

It is an arithmetic number, because the mean of its divisors is an integer number (27884571708).

Almost surely, 2^83653715121 is an apocalyptic number.

It is an amenable number.

83653715121 is a deficient number, since it is larger than the sum of its proper divisors (27884571711).

83653715121 is a wasteful number, since it uses less digits than its factorization.

83653715121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27884571710.

The product of its digits is 151200, while the sum is 42.

The spelling of 83653715121 in words is "eighty-three billion, six hundred fifty-three million, seven hundred fifteen thousand, one hundred twenty-one".