20576538685140 has 48 divisors (see below), whose sum is σ = 57615252031680. Its totient is φ = 5486987105280.

The previous prime is 20576538685139. The next prime is 20576538685217. The reversal of 20576538685140 is 4158683567502.

It is a super-2 number, since 2×20576538685140² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 925935 + ... + 6481545.

It is an arithmetic number, because the mean of its divisors is an integer number (1200317750660).

Almost surely, 2^{20576538685140} is an apocalyptic number.

20576538685140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20576538685140 is an abundant number, since it is smaller than the sum of its proper divisors (37038713346540).

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

20576538685140 is a wasteful number, since it uses less digits than its factorization.

20576538685140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617352 (or 5617350 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 60.

The spelling of 20576538685140 in words is "twenty trillion, five hundred seventy-six billion, five hundred thirty-eight million, six hundred eighty-five thousand, one hundred forty".