161439596055 has 144 divisors (see below), whose sum is σ = 309450417120. Its totient is φ = 77620032000.

The previous prime is 161439595973. The next prime is 161439596069. The reversal of 161439596055 is 550695934161.

161439596055 is a `hidden beast` number, since 1 + 6 + 1 + 43 + 9 + 596 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 161439596055 - 2¹³ = 161439587863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161439595992 and 161439596010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 50119345 + ... + 50122565.

It is an arithmetic number, because the mean of its divisors is an integer number (2148961230).

Almost surely, 2^161439596055 is an apocalyptic number.

161439596055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161439596055 is a deficient number, since it is larger than the sum of its proper divisors (148010821065).

161439596055 is a wasteful number, since it uses less digits than its factorization.

161439596055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 3340 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 54.

The spelling of 161439596055 in words is "one hundred sixty-one billion, four hundred thirty-nine million, five hundred ninety-six thousand, fifty-five".