20747878130574 has 64 divisors (see below), whose sum is σ = 53414846138880. Its totient is φ = 5846760169920.

The previous prime is 20747878130563. The next prime is 20747878130611. The reversal of 20747878130574 is 47503187874702.

20747878130574 is a `hidden beast` number, since 2 + 0 + 7 + 47 + 8 + 7 + 8 + 13 + 0 + 574 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375921492 + ... + 375976679.

It is an arithmetic number, because the mean of its divisors is an integer number (834606970920).

Almost surely, 2^{20747878130574} is an apocalyptic number.

20747878130574 is an abundant number, since it is smaller than the sum of its proper divisors (32666968008306).

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

20747878130574 is a wasteful number, since it uses less digits than its factorization.

20747878130574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751898262 (or 751898256 counting only the distinct ones).

The product of its (nonzero) digits is 73758720, while the sum is 63.

The spelling of 20747878130574 in words is "twenty trillion, seven hundred forty-seven billion, eight hundred seventy-eight million, one hundred thirty thousand, five hundred seventy-four".