45973188638 has 48 divisors (see below), whose sum is σ = 79120904976. Its totient is φ = 19956119040.

The previous prime is 45973188631. The next prime is 45973188673. The reversal of 45973188638 is 83688137954.

It is a super-2 number, since 2×45973188638² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45973188631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15472493 + ... + 15475463.

It is an arithmetic number, because the mean of its divisors is an integer number (1648352187).

Almost surely, 2^45973188638 is an apocalyptic number.

45973188638 is a deficient number, since it is larger than the sum of its proper divisors (33147716338).

45973188638 is a wasteful number, since it uses less digits than its factorization.

45973188638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709 (or 5696 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 62.

The spelling of 45973188638 in words is "forty-five billion, nine hundred seventy-three million, one hundred eighty-eight thousand, six hundred thirty-eight".