400312142216 has 64 divisors (see below), whose sum is σ = 860626166400. Its totient is φ = 171000317952.

The previous prime is 400312142213. The next prime is 400312142311. The reversal of 400312142216 is 612241213004.

It is a super-2 number, since 2×400312142216² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400312142213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24286970 + ... + 24303446.

It is an arithmetic number, because the mean of its divisors is an integer number (13447283850).

Almost surely, 2^400312142216 is an apocalyptic number.

It is an amenable number.

400312142216 is an abundant number, since it is smaller than the sum of its proper divisors (460314024184).

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

400312142216 is a wasteful number, since it uses less digits than its factorization.

400312142216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17886 (or 17882 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 400312142216 in words is "four hundred billion, three hundred twelve million, one hundred forty-two thousand, two hundred sixteen".