40123199992 has 16 divisors (see below), whose sum is σ = 79190526600. Its totient is φ = 19005726240.

The previous prime is 40123199959. The next prime is 40123200041. The reversal of 40123199992 is 29999132104.

It is a congruent number.

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, 131984059 + ... + 131984362.

Almost surely, 2^40123199992 is an apocalyptic number.

It is an amenable number.

40123199992 is a deficient number, since it is larger than the sum of its proper divisors (39067326608).

40123199992 is a wasteful number, since it uses less digits than its factorization.

40123199992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263968446 (or 263968442 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 40123199992 in words is "forty billion, one hundred twenty-three million, one hundred ninety-nine thousand, nine hundred ninety-two".