53667314921 has 4 divisors (see below), whose sum is σ = 58546161744. Its totient is φ = 48788468100.

The previous prime is 53667314887. The next prime is 53667314933. The reversal of 53667314921 is 12941376635.

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 a de Polignac number, because none of the positive numbers 2^k-53667314921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53667314321) 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, 2439423395 + ... + 2439423416.

It is an arithmetic number, because the mean of its divisors is an integer number (14636540436).

Almost surely, 2^53667314921 is an apocalyptic number.

It is an amenable number.

53667314921 is a deficient number, since it is larger than the sum of its proper divisors (4878846823).

53667314921 is a wasteful number, since it uses less digits than its factorization.

53667314921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878846822.

The product of its digits is 816480, while the sum is 47.

The spelling of 53667314921 in words is "fifty-three billion, six hundred sixty-seven million, three hundred fourteen thousand, nine hundred twenty-one".