20510122790 has 16 divisors (see below), whose sum is σ = 36983113920. Its totient is φ = 8189628480.

The previous prime is 20510122751. The next prime is 20510122807. The reversal of 20510122790 is 9722101502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1796606 + ... + 1807985.

It is an arithmetic number, because the mean of its divisors is an integer number (2311444620).

Almost surely, 2^20510122790 is an apocalyptic number.

20510122790 is a deficient number, since it is larger than the sum of its proper divisors (16472991130).

20510122790 is a wasteful number, since it uses less digits than its factorization.

20510122790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605167.

The product of its (nonzero) digits is 2520, while the sum is 29.

The spelling of 20510122790 in words is "twenty billion, five hundred ten million, one hundred twenty-two thousand, seven hundred ninety".