53971178688 has 672 divisors, whose sum is σ = 195710860800. Its totient is φ = 14404386816.

The previous prime is 53971178671. The next prime is 53971178699. The reversal of 53971178688 is 88687117935.

53971178688 is a `hidden beast` number, since 539 + 7 + 1 + 17 + 8 + 6 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 200636218 + ... + 200636486.

It is an arithmetic number, because the mean of its divisors is an integer number (291236400).

Almost surely, 2^53971178688 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 53971178688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97855430400).

53971178688 is an abundant number, since it is smaller than the sum of its proper divisors (141739682112).

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

53971178688 is a wasteful number, since it uses less digits than its factorization.

53971178688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 397 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 63.

The spelling of 53971178688 in words is "fifty-three billion, nine hundred seventy-one million, one hundred seventy-eight thousand, six hundred eighty-eight".