45020555664 has 160 divisors (see below), whose sum is σ = 135740359680. Its totient is φ = 12592267776.

The previous prime is 45020555663. The next prime is 45020555687. The reversal of 45020555664 is 46655502054.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (45020555663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3663322 + ... + 3675590.

It is an arithmetic number, because the mean of its divisors is an integer number (848377248).

Almost surely, 2^45020555664 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 45020555664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67870179840).

45020555664 is an abundant number, since it is smaller than the sum of its proper divisors (90719804016).

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

45020555664 is a wasteful number, since it uses less digits than its factorization.

45020555664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12517 (or 12511 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 45020555664 in words is "forty-five billion, twenty million, five hundred fifty-five thousand, six hundred sixty-four".