55161156567 has 48 divisors (see below), whose sum is σ = 82964165760. Its totient is φ = 32562678720.

The previous prime is 55161156559. The next prime is 55161156571. The reversal of 55161156567 is 76565116155.

It is not a de Polignac number, because 55161156567 - 2³ = 55161156559 is a prime.

It is a super-4 number, since 4×55161156567⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161156517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2663908 + ... + 2684534.

It is an arithmetic number, because the mean of its divisors is an integer number (1728420120).

Almost surely, 2^55161156567 is an apocalyptic number.

55161156567 is a deficient number, since it is larger than the sum of its proper divisors (27803009193).

55161156567 is a wasteful number, since it uses less digits than its factorization.

55161156567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20844 (or 20833 counting only the distinct ones).

The product of its digits is 945000, while the sum is 48.

The spelling of 55161156567 in words is "fifty-five billion, one hundred sixty-one million, one hundred fifty-six thousand, five hundred sixty-seven".