18775665290829 has 32 divisors (see below), whose sum is σ = 25541019750400. Its totient is φ = 12266136866880.

The previous prime is 18775665290821. The next prime is 18775665290831. The reversal of 18775665290829 is 92809256657781.

It is not a de Polignac number, because 18775665290829 - 2³ = 18775665290821 is a prime.

It is a super-2 number, since 2×18775665290829² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18775665290821) 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, 113999319 + ... + 114163899.

It is an arithmetic number, because the mean of its divisors is an integer number (798156867200).

Almost surely, 2^{18775665290829} is an apocalyptic number.

It is an amenable number.

18775665290829 is a deficient number, since it is larger than the sum of its proper divisors (6765354459571).

18775665290829 is a wasteful number, since it uses less digits than its factorization.

18775665290829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168265.

The product of its (nonzero) digits is 914457600, while the sum is 75.

The spelling of 18775665290829 in words is "eighteen trillion, seven hundred seventy-five billion, six hundred sixty-five million, two hundred ninety thousand, eight hundred twenty-nine".