55921668299 has 16 divisors (see below), whose sum is σ = 64258080768. Its totient is φ = 47672567712.

The previous prime is 55921668293. The next prime is 55921668307. The reversal of 55921668299 is 99286612955.

It is a de Polignac number, because none of the positive numbers 2^k-55921668299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55921668293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680329 + ... + 1713285.

It is an arithmetic number, because the mean of its divisors is an integer number (4016130048).

Almost surely, 2^55921668299 is an apocalyptic number.

55921668299 is a deficient number, since it is larger than the sum of its proper divisors (8336412469).

55921668299 is a wasteful number, since it uses less digits than its factorization.

55921668299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34274.

The product of its digits is 20995200, while the sum is 62.

The spelling of 55921668299 in words is "fifty-five billion, nine hundred twenty-one million, six hundred sixty-eight thousand, two hundred ninety-nine".