20974835838210 has 32 divisors (see below), whose sum is σ = 52528284535680. Its totient is φ = 5350103054208.

The previous prime is 20974835838191. The next prime is 20974835838241. The reversal of 20974835838210 is 1283853847902.

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, 15199155715 + ... + 15199157094.

It is an arithmetic number, because the mean of its divisors is an integer number (1641508891740).

Almost surely, 2^{20974835838210} is an apocalyptic number.

20974835838210 is an abundant number, since it is smaller than the sum of its proper divisors (31553448697470).

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

20974835838210 is a wasteful number, since it uses less digits than its factorization.

20974835838210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30398312842.

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 20974835838210 in words is "twenty trillion, nine hundred seventy-four billion, eight hundred thirty-five million, eight hundred thirty-eight thousand, two hundred ten".