400323040636 has 12 divisors (see below), whose sum is σ = 701016436512. Its totient is φ = 200032630208.

The previous prime is 400323040633. The next prime is 400323040651. The reversal of 400323040636 is 636040323004.

It is a junction number, because it is equal to n+sod(n) for n = 400323040598 and 400323040607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400323040633) 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, 32215540 + ... + 32227963.

It is an arithmetic number, because the mean of its divisors is an integer number (58418036376).

Almost surely, 2^400323040636 is an apocalyptic number.

It is an amenable number.

400323040636 is a deficient number, since it is larger than the sum of its proper divisors (300693395876).

400323040636 is a wasteful number, since it uses less digits than its factorization.

400323040636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64445060 (or 64445058 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 31.

The spelling of 400323040636 in words is "four hundred billion, three hundred twenty-three million, forty thousand, six hundred thirty-six".