20135494370780 has 48 divisors (see below), whose sum is σ = 47128277861280. Its totient is φ = 7181451859968.

The previous prime is 20135494370773. The next prime is 20135494370819. The reversal of 20135494370780 is 8707349453102.

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, 1558468337 + ... + 1558481256.

It is an arithmetic number, because the mean of its divisors is an integer number (981839122110).

Almost surely, 2^{20135494370780} is an apocalyptic number.

20135494370780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20135494370780 is an abundant number, since it is smaller than the sum of its proper divisors (26992783490500).

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

20135494370780 is a wasteful number, since it uses less digits than its factorization.

20135494370780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116949638 (or 3116949636 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 20135494370780 in words is "twenty trillion, one hundred thirty-five billion, four hundred ninety-four million, three hundred seventy thousand, seven hundred eighty".