20812555146604 has 24 divisors (see below), whose sum is σ = 39223824989328. Its totient is φ = 9605754674880.

The previous prime is 20812555146589. The next prime is 20812555146623. The reversal of 20812555146604 is 40664155521802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14435439 + ... + 15811609.

It is an arithmetic number, because the mean of its divisors is an integer number (1634326041222).

Almost surely, 2^{20812555146604} is an apocalyptic number.

It is an amenable number.

20812555146604 is a deficient number, since it is larger than the sum of its proper divisors (18411269842724).

20812555146604 is a wasteful number, since it uses less digits than its factorization.

20812555146604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667025 (or 1667023 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 49.

The spelling of 20812555146604 in words is "twenty trillion, eight hundred twelve billion, five hundred fifty-five million, one hundred forty-six thousand, six hundred four".