55161106156 has 24 divisors (see below), whose sum is σ = 104003872784. Its totient is φ = 25447608000.

The previous prime is 55161106139. The next prime is 55161106157. The reversal of 55161106156 is 65160116155.

It is not an unprimeable number, because it can be changed into a prime (55161106157) 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, 118575 + ... + 352678.

Almost surely, 2^55161106156 is an apocalyptic number.

It is an amenable number.

55161106156 is a deficient number, since it is larger than the sum of its proper divisors (48842766628).

55161106156 is a wasteful number, since it uses less digits than its factorization.

55161106156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473521 (or 473519 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

Subtracting 55161106156 from its reverse (65160116155), we obtain a palindrome (9999009999).

The spelling of 55161106156 in words is "fifty-five billion, one hundred sixty-one million, one hundred six thousand, one hundred fifty-six".