55391427525099 has 8 divisors (see below), whose sum is σ = 73922807826832. Its totient is φ = 36893832786720.

The previous prime is 55391427525019. The next prime is 55391427525103. The reversal of 55391427525099 is 99052572419355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-55391427525099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55391427525019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8446387012 + ... + 8446393569.

It is an arithmetic number, because the mean of its divisors is an integer number (9240350978354).

Almost surely, 2^{55391427525099} is an apocalyptic number.

55391427525099 is a deficient number, since it is larger than the sum of its proper divisors (18531380301733).

55391427525099 is a wasteful number, since it uses less digits than its factorization.

55391427525099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16892781677.

The product of its (nonzero) digits is 153090000, while the sum is 66.

The spelling of 55391427525099 in words is "fifty-five trillion, three hundred ninety-one billion, four hundred twenty-seven million, five hundred twenty-five thousand, ninety-nine".