45138706722 has 18 divisors (see below), whose sum is σ = 97802484273. Its totient is φ = 15045935112.

The previous prime is 45138706699. The next prime is 45138706729. The reversal of 45138706722 is 22760783154.

45138706722 is a `hidden beast` number, since 4 + 513 + 8 + 70 + 67 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39195684441 + 5943022281 = 197979^2 + 77091^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=150231.

It is not an unprimeable number, because it can be changed into a prime (45138706729) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 876348 + ... + 926424.

Almost surely, 2^45138706722 is an apocalyptic number.

45138706722 is an abundant number, since it is smaller than the sum of its proper divisors (52663777551).

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

45138706722 is an frugal number, since it uses more digits than its factorization.

45138706722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100162 (or 50082 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 45138706722 in words is "forty-five billion, one hundred thirty-eight million, seven hundred six thousand, seven hundred twenty-two".