400624533423 has 12 divisors (see below), whose sum is σ = 578758251760. Its totient is φ = 267046851456.

The previous prime is 400624533409. The next prime is 400624533427. The reversal of 400624533423 is 324335426004.

400624533423 is a `hidden beast` number, since 4 + 0 + 0 + 624 + 5 + 3 + 3 + 4 + 23 = 666.

It is not a de Polignac number, because 400624533423 - 2¹⁴ = 400624517039 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 (400624533427) 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, 2944003 + ... + 3077076.

Almost surely, 2^400624533423 is an apocalyptic number.

400624533423 is a deficient number, since it is larger than the sum of its proper divisors (178133718337).

400624533423 is a wasteful number, since it uses less digits than its factorization.

400624533423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6028478 (or 6028475 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 36.

Adding to 400624533423 its reverse (324335426004), we get a palindrome (724959959427).

The spelling of 400624533423 in words is "four hundred billion, six hundred twenty-four million, five hundred thirty-three thousand, four hundred twenty-three".