400100500836 has 30 divisors (see below), whose sum is σ = 1045941742230. Its totient is φ = 133366833504.

The previous prime is 400100500823. The next prime is 400100500853. The reversal of 400100500836 is 638005001004.

It can be written as a sum of positive squares in only one way, i.e., 312872422500 + 87228078336 = 559350^2 + 295344^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 617438721 + ... + 617439368.

It is an arithmetic number, because the mean of its divisors is an integer number (34864724741).

Almost surely, 2^400100500836 is an apocalyptic number.

It is an amenable number.

400100500836 is an abundant number, since it is smaller than the sum of its proper divisors (645841241394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400100500836 is a wasteful number, since it uses less digits than its factorization.

400100500836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234878105 (or 1234878094 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 400100500836 in words is "four hundred billion, one hundred million, five hundred thousand, eight hundred thirty-six".