45747356721 has 16 divisors (see below), whose sum is σ = 66739078848. Its totient is φ = 27643392000.

The previous prime is 45747356621. The next prime is 45747356783. The reversal of 45747356721 is 12765374754.

It is not a de Polignac number, because 45747356721 - 2¹¹ = 45747354673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45747356621) 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, 2045680 + ... + 2067921.

It is an arithmetic number, because the mean of its divisors is an integer number (4171192428).

Almost surely, 2^45747356721 is an apocalyptic number.

It is an amenable number.

45747356721 is a deficient number, since it is larger than the sum of its proper divisors (20991722127).

45747356721 is a wasteful number, since it uses less digits than its factorization.

45747356721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113952.

The product of its digits is 4939200, while the sum is 51.

The spelling of 45747356721 in words is "forty-five billion, seven hundred forty-seven million, three hundred fifty-six thousand, seven hundred twenty-one".