51775573564 has 24 divisors (see below), whose sum is σ = 106447683888. Its totient is φ = 21724016640.

The previous prime is 51775573559. The next prime is 51775573573. The reversal of 51775573564 is 46537557715.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45257797 + ... + 45258940.

It is an arithmetic number, because the mean of its divisors is an integer number (4435320162).

Almost surely, 2^51775573564 is an apocalyptic number.

It is an amenable number.

51775573564 is an abundant number, since it is smaller than the sum of its proper divisors (54672110324).

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

51775573564 is a wasteful number, since it uses less digits than its factorization.

51775573564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90516765 (or 90516763 counting only the distinct ones).

The product of its digits is 15435000, while the sum is 55.

The spelling of 51775573564 in words is "fifty-one billion, seven hundred seventy-five million, five hundred seventy-three thousand, five hundred sixty-four".