400071433866 has 16 divisors (see below), whose sum is σ = 861692319264. Its totient is φ = 123098902704.

The previous prime is 400071433847. The next prime is 400071433889. The reversal of 400071433866 is 668334170004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2564560396 + ... + 2564560551.

It is an arithmetic number, because the mean of its divisors is an integer number (53855769954).

Almost surely, 2^400071433866 is an apocalyptic number.

400071433866 is an abundant number, since it is smaller than the sum of its proper divisors (461620885398).

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

400071433866 is a wasteful number, since it uses less digits than its factorization.

400071433866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129120965.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 400071433866 in words is "four hundred billion, seventy-one million, four hundred thirty-three thousand, eight hundred sixty-six".