55131377955 has 16 divisors (see below), whose sum is σ = 90361674144. Its totient is φ = 28686245120.

The previous prime is 55131377947. The next prime is 55131377969. The reversal of 55131377955 is 55977313155.

It is not a de Polignac number, because 55131377955 - 2³ = 55131377947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55131377898 and 55131377907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44821644 + ... + 44822873.

It is an arithmetic number, because the mean of its divisors is an integer number (5647604634).

Almost surely, 2^55131377955 is an apocalyptic number.

55131377955 is a deficient number, since it is larger than the sum of its proper divisors (35230296189).

55131377955 is a wasteful number, since it uses less digits than its factorization.

55131377955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89644566.

The product of its digits is 2480625, while the sum is 51.

The spelling of 55131377955 in words is "fifty-five billion, one hundred thirty-one million, three hundred seventy-seven thousand, nine hundred fifty-five".