55156616542 has 16 divisors (see below), whose sum is σ = 89443164240. Its totient is φ = 25420687488.

The previous prime is 55156616539. The next prime is 55156616597. The reversal of 55156616542 is 24561665155.

It is a happy number.

It is a super-2 number, since 2×55156616542² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55156616492 and 55156616501.

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, 19613323 + ... + 19616134.

It is an arithmetic number, because the mean of its divisors is an integer number (5590197765).

Almost surely, 2^55156616542 is an apocalyptic number.

55156616542 is a deficient number, since it is larger than the sum of its proper divisors (34286547698).

55156616542 is a wasteful number, since it uses less digits than its factorization.

55156616542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39229515.

The product of its digits is 1080000, while the sum is 46.

The spelling of 55156616542 in words is "fifty-five billion, one hundred fifty-six million, six hundred sixteen thousand, five hundred forty-two".