400203552455023 has 4 divisors (see below), whose sum is σ = 403354761529600. Its totient is φ = 397052343380448.

The previous prime is 400203552454879. The next prime is 400203552455081. The reversal of 400203552455023 is 320554255302004.

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 400203552455023 - 2¹⁷ = 400203552323951 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 (400203552455423) 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, 1575604537098 + ... + 1575604537351.

It is an arithmetic number, because the mean of its divisors is an integer number (100838690382400).

Almost surely, 2^{400203552455023} is an apocalyptic number.

400203552455023 is a deficient number, since it is larger than the sum of its proper divisors (3151209074577).

400203552455023 is a wasteful number, since it uses less digits than its factorization.

400203552455023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151209074576.

The product of its (nonzero) digits is 720000, while the sum is 40.

The spelling of 400203552455023 in words is "four hundred trillion, two hundred three billion, five hundred fifty-two million, four hundred fifty-five thousand, twenty-three".