55818137952 has 72 divisors (see below), whose sum is σ = 158755713480. Its totient is φ = 18603363840.

The previous prime is 55818137897. The next prime is 55818137957. The reversal of 55818137952 is 25973181855.

55818137952 is a `hidden beast` number, since 5 + 581 + 8 + 1 + 3 + 7 + 9 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55818137957) 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 11 ways as a sum of consecutive naturals, for example, 3681427 + ... + 3696557.

It is an arithmetic number, because the mean of its divisors is an integer number (2204940465).

Almost surely, 2^55818137952 is an apocalyptic number.

It is an amenable number.

55818137952 is an abundant number, since it is smaller than the sum of its proper divisors (102937575528).

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

55818137952 is a wasteful number, since it uses less digits than its factorization.

55818137952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27956 (or 27945 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 54.

The spelling of 55818137952 in words is "fifty-five billion, eight hundred eighteen million, one hundred thirty-seven thousand, nine hundred fifty-two".