20129773580288 has 52 divisors (see below), whose sum is σ = 41553169464768. Its totient is φ = 9740212961280.

The previous prime is 20129773580263. The next prime is 20129773580299. The reversal of 20129773580288 is 88208537792102.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 20129773580288.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79139081 + ... + 79393032.

It is an arithmetic number, because the mean of its divisors is an integer number (799099412784).

Almost surely, 2^{20129773580288} is an apocalyptic number.

It is an amenable number.

20129773580288 is an abundant number, since it is smaller than the sum of its proper divisors (21423395884480).

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

20129773580288 is an equidigital number, since it uses as much as digits as its factorization.

20129773580288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158532168 (or 158532146 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 62.

The spelling of 20129773580288 in words is "twenty trillion, one hundred twenty-nine billion, seven hundred seventy-three million, five hundred eighty thousand, two hundred eighty-eight".