20937962842 has 8 divisors (see below), whose sum is σ = 31407561216. Its totient is φ = 10468775772.

The previous prime is 20937962833. The next prime is 20937962849. The reversal of 20937962842 is 24826973902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20937962842.

It is not an unprimeable number, because it can be changed into a prime (20937962849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128743 + ... + 241765.

It is an arithmetic number, because the mean of its divisors is an integer number (3925945152).

Almost surely, 2^20937962842 is an apocalyptic number.

20937962842 is a deficient number, since it is larger than the sum of its proper divisors (10469598374).

20937962842 is a wasteful number, since it uses less digits than its factorization.

20937962842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205652.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 20937962842 in words is "twenty billion, nine hundred thirty-seven million, nine hundred sixty-two thousand, eight hundred forty-two".