45229795721 has 16 divisors (see below), whose sum is σ = 50482709376. Its totient is φ = 40176000000.

The previous prime is 45229795693. The next prime is 45229795729. The reversal of 45229795721 is 12759792254.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45229795721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45229795729) 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, 121880 + ... + 324521.

It is an arithmetic number, because the mean of its divisors is an integer number (3155169336).

Almost surely, 2^45229795721 is an apocalyptic number.

It is an amenable number.

45229795721 is a deficient number, since it is larger than the sum of its proper divisors (5252913655).

45229795721 is a wasteful number, since it uses less digits than its factorization.

45229795721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446624.

The product of its digits is 3175200, while the sum is 53.

The spelling of 45229795721 in words is "forty-five billion, two hundred twenty-nine million, seven hundred ninety-five thousand, seven hundred twenty-one".