55117151243 has 32 divisors (see below), whose sum is σ = 72460669440. Its totient is φ = 40616847360.

The previous prime is 55117151227. The next prime is 55117151279. The reversal of 55117151243 is 34215171155.

It is a cyclic number.

It is not a de Polignac number, because 55117151243 - 2⁴ = 55117151227 is a prime.

It is a super-2 number, since 2×55117151243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55117151203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 811505 + ... + 876797.

It is an arithmetic number, because the mean of its divisors is an integer number (2264395920).

Almost surely, 2^55117151243 is an apocalyptic number.

55117151243 is a deficient number, since it is larger than the sum of its proper divisors (17343518197).

55117151243 is a wasteful number, since it uses less digits than its factorization.

55117151243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65907.

The product of its digits is 21000, while the sum is 35.

The spelling of 55117151243 in words is "fifty-five billion, one hundred seventeen million, one hundred fifty-one thousand, two hundred forty-three".