20838952939 has 8 divisors (see below), whose sum is σ = 23936840928. Its totient is φ = 17771288640.

The previous prime is 20838952877. The next prime is 20838952973. The reversal of 20838952939 is 93925983802.

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

It is not a de Polignac number, because 20838952939 - 2²³ = 20830564331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20838950939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7554442 + ... + 7557199.

It is an arithmetic number, because the mean of its divisors is an integer number (2992105116).

Almost surely, 2^20838952939 is an apocalyptic number.

20838952939 is a deficient number, since it is larger than the sum of its proper divisors (3097887989).

20838952939 is a wasteful number, since it uses less digits than its factorization.

20838952939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15111845.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 20838952939 in words is "twenty billion, eight hundred thirty-eight million, nine hundred fifty-two thousand, nine hundred thirty-nine".