20702831280530 has 64 divisors (see below), whose sum is σ = 43715440247040. Its totient is φ = 6912624672000.

The previous prime is 20702831280517. The next prime is 20702831280613. The reversal of 20702831280530 is 3508213820702.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23570900 + ... + 24433439.

It is an arithmetic number, because the mean of its divisors is an integer number (683053753860).

Almost surely, 2^{20702831280530} is an apocalyptic number.

20702831280530 is an abundant number, since it is smaller than the sum of its proper divisors (23012608966510).

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

20702831280530 is a wasteful number, since it uses less digits than its factorization.

20702831280530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48004515.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 20702831280530 in words is "twenty trillion, seven hundred two billion, eight hundred thirty-one million, two hundred eighty thousand, five hundred thirty".