20004356657572 has 48 divisors (see below), whose sum is σ = 40172283809280. Its totient is φ = 8538284287872.

The previous prime is 20004356657531. The next prime is 20004356657573. The reversal of 20004356657572 is 27575665340002.

It is not an unprimeable number, because it can be changed into a prime (20004356657573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11379454 + ... + 13019242.

It is an arithmetic number, because the mean of its divisors is an integer number (836922579360).

Almost surely, 2^{20004356657572} is an apocalyptic number.

It is an amenable number.

20004356657572 is an abundant number, since it is smaller than the sum of its proper divisors (20167927151708).

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

20004356657572 is a wasteful number, since it uses less digits than its factorization.

20004356657572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641580 (or 1641578 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 52.

The spelling of 20004356657572 in words is "twenty trillion, four billion, three hundred fifty-six million, six hundred fifty-seven thousand, five hundred seventy-two".