55611654161 has 16 divisors (see below), whose sum is σ = 66337843968. Its totient is φ = 45582028800.

The previous prime is 55611654149. The next prime is 55611654179. The reversal of 55611654161 is 16145611655.

It is a happy number.

It is not a de Polignac number, because 55611654161 - 2¹⁸ = 55611392017 is a prime.

It is a super-2 number, since 2×55611654161² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55611654191) 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, 559601 + ... + 651441.

It is an arithmetic number, because the mean of its divisors is an integer number (4146115248).

Almost surely, 2^55611654161 is an apocalyptic number.

It is an amenable number.

55611654161 is a deficient number, since it is larger than the sum of its proper divisors (10726189807).

55611654161 is a wasteful number, since it uses less digits than its factorization.

55611654161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95632.

The product of its digits is 108000, while the sum is 41.

The spelling of 55611654161 in words is "fifty-five billion, six hundred eleven million, six hundred fifty-four thousand, one hundred sixty-one".