53997765960 has 128 divisors (see below), whose sum is σ = 166637502720. Its totient is φ = 13987832832.

The previous prime is 53997765917. The next prime is 53997765971. The reversal of 53997765960 is 6956779935.

It is a super-3 number, since 3×53997765960³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53997765891 and 53997765900.

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, 2863282 + ... + 2882078.

It is an arithmetic number, because the mean of its divisors is an integer number (1301855490).

Almost surely, 2^53997765960 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 53997765960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83318751360).

53997765960 is an abundant number, since it is smaller than the sum of its proper divisors (112639736760).

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

53997765960 is a wasteful number, since it uses less digits than its factorization.

53997765960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19495 (or 19491 counting only the distinct ones).

The product of its (nonzero) digits is 96446700, while the sum is 66.

The spelling of 53997765960 in words is "fifty-three billion, nine hundred ninety-seven million, seven hundred sixty-five thousand, nine hundred sixty".