55123130361 has 24 divisors (see below), whose sum is σ = 79670792160. Its totient is φ = 33885810816.

The previous prime is 55123130357. The next prime is 55123130399. The reversal of 55123130361 is 16303132155.

It is not a de Polignac number, because 55123130361 - 2² = 55123130357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55123130341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 422725 + ... + 537533.

It is an arithmetic number, because the mean of its divisors is an integer number (3319616340).

Almost surely, 2^55123130361 is an apocalyptic number.

It is an amenable number.

55123130361 is a deficient number, since it is larger than the sum of its proper divisors (24547661799).

55123130361 is a wasteful number, since it uses less digits than its factorization.

55123130361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115785 (or 115772 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The spelling of 55123130361 in words is "fifty-five billion, one hundred twenty-three million, one hundred thirty thousand, three hundred sixty-one".