20024157620256 has 96 divisors (see below), whose sum is σ = 53809423956288. Its totient is φ = 6516631941120.

The previous prime is 20024157620237. The next prime is 20024157620273. The reversal of 20024157620256 is 65202675142002.

It is a tau number, because it is divible by the number of its divisors (96).

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, 8352660 + ... + 10479276.

It is an arithmetic number, because the mean of its divisors is an integer number (560514832878).

Almost surely, 2^{20024157620256} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20024157620256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26904711978144).

20024157620256 is an abundant number, since it is smaller than the sum of its proper divisors (33785266336032).

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

20024157620256 is a wasteful number, since it uses less digits than its factorization.

20024157620256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128954 (or 2128946 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 20024157620256 in words is "twenty trillion, twenty-four billion, one hundred fifty-seven million, six hundred twenty thousand, two hundred fifty-six".