53977965956 has 12 divisors (see below), whose sum is σ = 100017995868. Its totient is φ = 25401395712.

The previous prime is 53977965859. The next prime is 53977965983. The reversal of 53977965956 is 65956977935.

It can be written as a sum of positive squares in 2 ways, for example, as 17184588100 + 36793377856 = 131090^2 + 191816^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53977965956.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396896741 + ... + 396896876.

It is an arithmetic number, because the mean of its divisors is an integer number (8334832989).

Almost surely, 2^53977965956 is an apocalyptic number.

It is an amenable number.

53977965956 is a deficient number, since it is larger than the sum of its proper divisors (46040029912).

53977965956 is a wasteful number, since it uses less digits than its factorization.

53977965956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793793638 (or 793793636 counting only the distinct ones).

The product of its digits is 482233500, while the sum is 71.

The spelling of 53977965956 in words is "fifty-three billion, nine hundred seventy-seven million, nine hundred sixty-five thousand, nine hundred fifty-six".