400155143916 has 24 divisors (see below), whose sum is σ = 1018576730304. Its totient is φ = 121259134480.

The previous prime is 400155143911. The next prime is 400155143917. The reversal of 400155143916 is 619341551004.

It is not an unprimeable number, because it can be changed into a prime (400155143911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1515739050 + ... + 1515739313.

It is an arithmetic number, because the mean of its divisors is an integer number (42440697096).

Almost surely, 2^400155143916 is an apocalyptic number.

It is an amenable number.

400155143916 is an abundant number, since it is smaller than the sum of its proper divisors (618421586388).

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

400155143916 is a wasteful number, since it uses less digits than its factorization.

400155143916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031478381 (or 3031478379 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 400155143916 in words is "four hundred billion, one hundred fifty-five million, one hundred forty-three thousand, nine hundred sixteen".