45001721502 has 32 divisors (see below), whose sum is σ = 105267187200. Its totient is φ = 14211069624.

The previous prime is 45001721431. The next prime is 45001721507. The reversal of 45001721502 is 20512710054.

45001721502 is a `hidden beast` number, since 4 + 500 + 1 + 7 + 2 + 150 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45001721507) 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, 21929638 + ... + 21931689.

It is an arithmetic number, because the mean of its divisors is an integer number (3289599600).

Almost surely, 2^45001721502 is an apocalyptic number.

45001721502 is an abundant number, since it is smaller than the sum of its proper divisors (60265465698).

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

45001721502 is a wasteful number, since it uses less digits than its factorization.

45001721502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43861357 (or 43861351 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The spelling of 45001721502 in words is "forty-five billion, one million, seven hundred twenty-one thousand, five hundred two".