45357620721 has 24 divisors (see below), whose sum is σ = 70369082784. Its totient is φ = 25911829440.

The previous prime is 45357620719. The next prime is 45357620731. The reversal of 45357620721 is 12702675354.

It is not a de Polignac number, because 45357620721 - 2¹ = 45357620719 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45357620701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549901 + ... + 626981.

It is an arithmetic number, because the mean of its divisors is an integer number (2932045116).

Almost surely, 2^45357620721 is an apocalyptic number.

It is an amenable number.

45357620721 is a deficient number, since it is larger than the sum of its proper divisors (25011462063).

45357620721 is a wasteful number, since it uses less digits than its factorization.

45357620721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81101 (or 81094 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 45357620721 in words is "forty-five billion, three hundred fifty-seven million, six hundred twenty thousand, seven hundred twenty-one".