53404663956 has 96 divisors (see below), whose sum is σ = 144615018240. Its totient is φ = 15023923200.

The previous prime is 53404663943. The next prime is 53404663967. The reversal of 53404663956 is 65936640435.

It is a junction number, because it is equal to n+sod(n) for n = 53404663899 and 53404663908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1786896 + ... + 1816536.

It is an arithmetic number, because the mean of its divisors is an integer number (1506406440).

Almost surely, 2^53404663956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53404663956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72307509120).

53404663956 is an abundant number, since it is smaller than the sum of its proper divisors (91210354284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53404663956 is a wasteful number, since it uses less digits than its factorization.

53404663956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29985 (or 29983 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 53404663956 in words is "fifty-three billion, four hundred four million, six hundred sixty-three thousand, nine hundred fifty-six".