45524721780 has 72 divisors (see below), whose sum is σ = 141303113952. Its totient is φ = 11857599936.

The previous prime is 45524721773. The next prime is 45524721799. The reversal of 45524721780 is 8712742554.

45524721780 is a `hidden beast` number, since 4 + 5 + 5 + 2 + 472 + 178 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2933134 + ... + 2948613.

Almost surely, 2^45524721780 is an apocalyptic number.

It is an amenable number.

45524721780 is an abundant number, since it is smaller than the sum of its proper divisors (95778392172).

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

45524721780 is a wasteful number, since it uses less digits than its factorization.

45524721780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881805 (or 5881800 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 45524721780 in words is "forty-five billion, five hundred twenty-four million, seven hundred twenty-one thousand, seven hundred eighty".