20578771635060 has 48 divisors (see below), whose sum is σ = 57621107561472. Its totient is φ = 5487620342400.

The previous prime is 20578771635049. The next prime is 20578771635073. The reversal of 20578771635060 is 6053617787502.

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, 4966030 + ... + 8112890.

It is an arithmetic number, because the mean of its divisors is an integer number (1200439740864).

Almost surely, 2^{20578771635060} is an apocalyptic number.

20578771635060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20578771635060 is an abundant number, since it is smaller than the sum of its proper divisors (37042335926412).

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

20578771635060 is a wasteful number, since it uses less digits than its factorization.

20578771635060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255864 (or 3255862 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 57.

The spelling of 20578771635060 in words is "twenty trillion, five hundred seventy-eight billion, seven hundred seventy-one million, six hundred thirty-five thousand, sixty".