53387896872 has 64 divisors (see below), whose sum is σ = 135809784000. Its totient is φ = 17484306944.

The previous prime is 53387896867. The next prime is 53387896897. The reversal of 53387896872 is 27869878335.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2698954 + ... + 2718662.

It is an arithmetic number, because the mean of its divisors is an integer number (2122027875).

Almost surely, 2^53387896872 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 53387896872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67904892000).

53387896872 is an abundant number, since it is smaller than the sum of its proper divisors (82421887128).

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

53387896872 is a wasteful number, since it uses less digits than its factorization.

53387896872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21690 (or 21686 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 66.

The spelling of 53387896872 in words is "fifty-three billion, three hundred eighty-seven million, eight hundred ninety-six thousand, eight hundred seventy-two".