55142971884 has 192 divisors, whose sum is σ = 191951047680. Its totient is φ = 13221066240.

The previous prime is 55142971879. The next prime is 55142971913. The reversal of 55142971884 is 48817924155.

55142971884 is a `hidden beast` number, since 551 + 4 + 2 + 9 + 7 + 1 + 8 + 84 = 666.

It is a super-2 number, since 2×55142971884² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 55142971884.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146929 + ... + 363144.

It is an arithmetic number, because the mean of its divisors is an integer number (999745040).

Almost surely, 2^55142971884 is an apocalyptic number.

55142971884 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55142971884 is an abundant number, since it is smaller than the sum of its proper divisors (136808075796).

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

55142971884 is a wasteful number, since it uses less digits than its factorization.

55142971884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510117 (or 510109 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

It can be divided in two parts, 5514297 and 1884, that added together give a triangular number (5516181 = T₃₃₂₁).

The spelling of 55142971884 in words is "fifty-five billion, one hundred forty-two million, nine hundred seventy-one thousand, eight hundred eighty-four".