21926886116637 has 16 divisors (see below), whose sum is σ = 29288051156160. Its totient is φ = 14591824021632.

The previous prime is 21926886116599. The next prime is 21926886116657. The reversal of 21926886116637 is 73661168862912.

It is not a de Polignac number, because 21926886116637 - 2⁶ = 21926886116573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21926886116657) 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, 68278558 + ... + 68598944.

It is an arithmetic number, because the mean of its divisors is an integer number (1830503197260).

Almost surely, 2^{21926886116637} is an apocalyptic number.

It is an amenable number.

21926886116637 is a deficient number, since it is larger than the sum of its proper divisors (7361165039523).

21926886116637 is a wasteful number, since it uses less digits than its factorization.

21926886116637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361052.

The product of its digits is 62705664, while the sum is 66.

The spelling of 21926886116637 in words is "twenty-one trillion, nine hundred twenty-six billion, eight hundred eighty-six million, one hundred sixteen thousand, six hundred thirty-seven".