20907192118842 has 32 divisors (see below), whose sum is σ = 46561208823360. Its totient is φ = 6953946755760.

The previous prime is 20907192118717. The next prime is 20907192118853. The reversal of 20907192118842 is 24881129170902.

It is a super-2 number, since 2×20907192118842² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419899428 + ... + 419949215.

It is an arithmetic number, because the mean of its divisors is an integer number (1455037775730).

Almost surely, 2^{20907192118842} is an apocalyptic number.

20907192118842 is an abundant number, since it is smaller than the sum of its proper divisors (25654016704518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20907192118842 is a wasteful number, since it uses less digits than its factorization.

20907192118842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839849115 (or 839849109 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The spelling of 20907192118842 in words is "twenty trillion, nine hundred seven billion, one hundred ninety-two million, one hundred eighteen thousand, eight hundred forty-two".