400203538159 has 12 divisors (see below), whose sum is σ = 426677977584. Its totient is φ = 374658583904.

The previous prime is 400203538151. The next prime is 400203538237. The reversal of 400203538159 is 951835302004.

It is not a de Polignac number, because 400203538159 - 2³ = 400203538151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400203538151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3887662 + ... + 3989275.

It is an arithmetic number, because the mean of its divisors is an integer number (35556498132).

Almost surely, 2^400203538159 is an apocalyptic number.

400203538159 is a deficient number, since it is larger than the sum of its proper divisors (26474439425).

400203538159 is an equidigital number, since it uses as much as digits as its factorization.

400203538159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7877054 (or 7877007 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 400203538159 in words is "four hundred billion, two hundred three million, five hundred thirty-eight thousand, one hundred fifty-nine".