45380745520 has 80 divisors (see below), whose sum is σ = 116820165888. Its totient is φ = 16255768320.

The previous prime is 45380745517. The next prime is 45380745521. The reversal of 45380745520 is 2554708354.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (45380745521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325884 + ... + 443803.

Almost surely, 2^45380745520 is an apocalyptic number.

45380745520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45380745520 is an abundant number, since it is smaller than the sum of its proper divisors (71439420368).

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

45380745520 is a wasteful number, since it uses less digits than its factorization.

45380745520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769778 (or 769772 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 45380745520 in words is "forty-five billion, three hundred eighty million, seven hundred forty-five thousand, five hundred twenty".