40004312216 has 32 divisors (see below), whose sum is σ = 81926095680. Its totient is φ = 18161757600.

The previous prime is 40004312143. The next prime is 40004312279. The reversal of 40004312216 is 61221340004.

It is a junction number, because it is equal to n+sod(n) for n = 40004312191 and 40004312200.

It is a congruent 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, 202070 + ... + 347621.

It is an arithmetic number, because the mean of its divisors is an integer number (2560190490).

Almost surely, 2^40004312216 is an apocalyptic number.

It is an amenable number.

40004312216 is an abundant number, since it is smaller than the sum of its proper divisors (41921783464).

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

40004312216 is a wasteful number, since it uses less digits than its factorization.

40004312216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550535 (or 550531 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The spelling of 40004312216 in words is "forty billion, four million, three hundred twelve thousand, two hundred sixteen".