53912621999 has 32 divisors (see below), whose sum is σ = 60367032000. Its totient is φ = 47936738304.

The previous prime is 53912621981. The next prime is 53912622011. The reversal of 53912621999 is 99912621935.

It is a happy number.

It is not a de Polignac number, because 53912621999 - 2¹² = 53912617903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53912621099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3174659 + ... + 3191595.

It is an arithmetic number, because the mean of its divisors is an integer number (1886469750).

Almost surely, 2^53912621999 is an apocalyptic number.

53912621999 is a deficient number, since it is larger than the sum of its proper divisors (6454410001).

53912621999 is a wasteful number, since it uses less digits than its factorization.

53912621999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17147.

The product of its digits is 2361960, while the sum is 56.

The spelling of 53912621999 in words is "fifty-three billion, nine hundred twelve million, six hundred twenty-one thousand, nine hundred ninety-nine".