55151624691 has 24 divisors (see below), whose sum is σ = 84005363520. Its totient is φ = 34770674736.

The previous prime is 55151624599. The next prime is 55151624771. The reversal of 55151624691 is 19642615155.

55151624691 is a `hidden beast` number, since 5 + 5 + 1 + 516 + 2 + 46 + 91 = 666.

It is not a de Polignac number, because 55151624691 - 2²⁷ = 55017406963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55151624191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190161 + ... + 382706.

It is an arithmetic number, because the mean of its divisors is an integer number (3500223480).

Almost surely, 2^55151624691 is an apocalyptic number.

55151624691 is a deficient number, since it is larger than the sum of its proper divisors (28853738829).

55151624691 is a wasteful number, since it uses less digits than its factorization.

55151624691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573455 (or 573452 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The spelling of 55151624691 in words is "fifty-five billion, one hundred fifty-one million, six hundred twenty-four thousand, six hundred ninety-one".