400435545023 has 4 divisors (see below), whose sum is σ = 400531969968. Its totient is φ = 400339120080.

The previous prime is 400435545017. The next prime is 400435545031. The reversal of 400435545023 is 320545534004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400435545023 - 2¹² = 400435540927 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 (400435545053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48206243 + ... + 48214548.

It is an arithmetic number, because the mean of its divisors is an integer number (100132992492).

Almost surely, 2^400435545023 is an apocalyptic number.

400435545023 is a deficient number, since it is larger than the sum of its proper divisors (96424945).

400435545023 is an equidigital number, since it uses as much as digits as its factorization.

400435545023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96424944.

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 400435545023 in words is "four hundred billion, four hundred thirty-five million, five hundred forty-five thousand, twenty-three".