40385720904 has 16 divisors (see below), whose sum is σ = 100964302320. Its totient is φ = 13461906960.

The previous prime is 40385720833. The next prime is 40385720951. The reversal of 40385720904 is 40902758304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841369162 + ... + 841369209.

It is an arithmetic number, because the mean of its divisors is an integer number (6310268895).

Almost surely, 2^40385720904 is an apocalyptic number.

It is an amenable number.

40385720904 is an abundant number, since it is smaller than the sum of its proper divisors (60578581416).

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

40385720904 is a wasteful number, since it uses less digits than its factorization.

40385720904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682738380 (or 1682738376 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 40385720904 in words is "forty billion, three hundred eighty-five million, seven hundred twenty thousand, nine hundred four".