161611555097054 has 16 divisors (see below), whose sum is σ = 254308615117920. Its totient is φ = 76920507037920.

The previous prime is 161611555096961. The next prime is 161611555097099. The reversal of 161611555097054 is 450790555116161.

It is a super-2 number, since 2×161611555097054² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19622574209 + ... + 19622582444.

It is an arithmetic number, because the mean of its divisors is an integer number (15894288444870).

Almost surely, 2^{161611555097054} is an apocalyptic number.

161611555097054 is a deficient number, since it is larger than the sum of its proper divisors (92697060020866).

161611555097054 is a wasteful number, since it uses less digits than its factorization.

161611555097054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39245156755.

The product of its (nonzero) digits is 5670000, while the sum is 56.

The spelling of 161611555097054 in words is "one hundred sixty-one trillion, six hundred eleven billion, five hundred fifty-five million, ninety-seven thousand, fifty-four".