55387188872 has 64 divisors (see below), whose sum is σ = 107804336640. Its totient is φ = 26677667520.

The previous prime is 55387188863. The next prime is 55387188877. The reversal of 55387188872 is 27888178355.

55387188872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×55387188872³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is not an unprimeable number, because it can be changed into a prime (55387188877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73166318 + ... + 73167074.

It is an arithmetic number, because the mean of its divisors is an integer number (1684442760).

Almost surely, 2^55387188872 is an apocalyptic number.

It is an amenable number.

55387188872 is a deficient number, since it is larger than the sum of its proper divisors (52417147768).

55387188872 is an equidigital number, since it uses as much as digits as its factorization.

55387188872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1097 counting only the distinct ones).

The product of its digits is 30105600, while the sum is 62.

The spelling of 55387188872 in words is "fifty-five billion, three hundred eighty-seven million, one hundred eighty-eight thousand, eight hundred seventy-two".