20735451557130 has 32 divisors (see below), whose sum is σ = 49849862457024. Its totient is φ = 5520033890816.

The previous prime is 20735451557111. The next prime is 20735451557159. The reversal of 20735451557130 is 3175515453702.

It is a self number, because there is not a number n which added to its sum of digits gives 20735451557130.

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, 588723207 + ... + 588758426.

It is an arithmetic number, because the mean of its divisors is an integer number (1557808201782).

Almost surely, 2^{20735451557130} is an apocalyptic number.

20735451557130 is an abundant number, since it is smaller than the sum of its proper divisors (29114410899894).

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

20735451557130 is a wasteful number, since it uses less digits than its factorization.

20735451557130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177482230.

The product of its (nonzero) digits is 2205000, while the sum is 48.

The spelling of 20735451557130 in words is "twenty trillion, seven hundred thirty-five billion, four hundred fifty-one million, five hundred fifty-seven thousand, one hundred thirty".