20970786011982 has 32 divisors (see below), whose sum is σ = 44577654501120. Its totient is φ = 6558058779840.

The previous prime is 20970786011927. The next prime is 20970786012023. The reversal of 20970786011982 is 28911068707902.

It is a congruent number.

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, 892970119 + ... + 892993602.

It is an arithmetic number, because the mean of its divisors is an integer number (1393051703160).

Almost surely, 2^{20970786011982} is an apocalyptic number.

20970786011982 is an abundant number, since it is smaller than the sum of its proper divisors (23606868489138).

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

20970786011982 is a wasteful number, since it uses less digits than its factorization.

20970786011982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785963848.

The product of its (nonzero) digits is 6096384, while the sum is 60.

The spelling of 20970786011982 in words is "twenty trillion, nine hundred seventy billion, seven hundred eighty-six million, eleven thousand, nine hundred eighty-two".