54722171988 has 72 divisors (see below), whose sum is σ = 152088867840. Its totient is φ = 16451890560.

The previous prime is 54722171929. The next prime is 54722172041. The reversal of 54722171988 is 88917122745.

54722171988 is a `hidden beast` number, since 5 + 472 + 21 + 71 + 9 + 88 = 666.

It is a super-2 number, since 2×54722171988² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 493753 + ... + 594336.

Almost surely, 2^54722171988 is an apocalyptic number.

It is an amenable number.

54722171988 is an abundant number, since it is smaller than the sum of its proper divisors (97366695852).

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

54722171988 is a wasteful number, since it uses less digits than its factorization.

54722171988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088237 (or 1088232 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The spelling of 54722171988 in words is "fifty-four billion, seven hundred twenty-two million, one hundred seventy-one thousand, nine hundred eighty-eight".