20858720401 has 8 divisors (see below), whose sum is σ = 23045952384. Its totient is φ = 18778182720.

The previous prime is 20858720329. The next prime is 20858720417. The reversal of 20858720401 is 10402785802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20858720401 - 2¹⁹ = 20858196113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20858790401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26673165 + ... + 26673946.

It is an arithmetic number, because the mean of its divisors is an integer number (2880744048).

Almost surely, 2^20858720401 is an apocalyptic number.

It is an amenable number.

20858720401 is a deficient number, since it is larger than the sum of its proper divisors (2187231983).

20858720401 is a wasteful number, since it uses less digits than its factorization.

20858720401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53347151.

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 20858720401 in words is "twenty billion, eight hundred fifty-eight million, seven hundred twenty thousand, four hundred one".