20400386901 has 8 divisors (see below), whose sum is σ = 27201175584. Its totient is φ = 13599928080.

The previous prime is 20400386891. The next prime is 20400386977. The reversal of 20400386901 is 10968300402.

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

It is not a de Polignac number, because 20400386901 - 2¹⁴ = 20400370517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400386401) 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, 204666 + ... + 287556.

It is an arithmetic number, because the mean of its divisors is an integer number (3400146948).

Almost surely, 2^20400386901 is an apocalyptic number.

It is an amenable number.

20400386901 is a deficient number, since it is larger than the sum of its proper divisors (6800788683).

20400386901 is an equidigital number, since it uses as much as digits as its factorization.

20400386901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164931.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 20400386901 in words is "twenty billion, four hundred million, three hundred eighty-six thousand, nine hundred one".