53151560644 has 144 divisors (see below), whose sum is σ = 119495779200. Its totient is φ = 20230898688.

The previous prime is 53151560633. The next prime is 53151560653. The reversal of 53151560644 is 44606515135.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 53151560597 and 53151560606.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56125779 + ... + 56126725.

It is an arithmetic number, because the mean of its divisors is an integer number (829831800).

Almost surely, 2^53151560644 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 53151560644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59747889600).

53151560644 is an abundant number, since it is smaller than the sum of its proper divisors (66344218556).

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

53151560644 is a wasteful number, since it uses less digits than its factorization.

53151560644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 53151560644 in words is "fifty-three billion, one hundred fifty-one million, five hundred sixty thousand, six hundred forty-four".