55140819120 has 80 divisors (see below), whose sum is σ = 189929495520. Its totient is φ = 14704217856.

The previous prime is 55140819103. The next prime is 55140819121. The reversal of 55140819120 is 2191804155.

55140819120 is a `hidden beast` number, since 5 + 514 + 0 + 8 + 19 + 120 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55140819121) 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, 12761919 + ... + 12766238.

It is an arithmetic number, because the mean of its divisors is an integer number (2374118694).

Almost surely, 2^55140819120 is an apocalyptic number.

It is an amenable number.

55140819120 is an abundant number, since it is smaller than the sum of its proper divisors (134788676400).

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

55140819120 is a wasteful number, since it uses less digits than its factorization.

55140819120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25528179 (or 25528167 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 55140819120 in words is "fifty-five billion, one hundred forty million, eight hundred nineteen thousand, one hundred twenty".