40291209992 has 64 divisors (see below), whose sum is σ = 87354728640. Its totient is φ = 17218508800.

The previous prime is 40291209991. The next prime is 40291210021. The reversal of 40291209992 is 29990219204.

It is not an unprimeable number, because it can be changed into a prime (40291209991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438748 + ... + 1466484.

It is an arithmetic number, because the mean of its divisors is an integer number (1364917635).

Almost surely, 2^40291209992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40291209992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43677364320).

40291209992 is an abundant number, since it is smaller than the sum of its proper divisors (47063518648).

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

40291209992 is a wasteful number, since it uses less digits than its factorization.

40291209992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28742 (or 28738 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 40291209992 in words is "forty billion, two hundred ninety-one million, two hundred nine thousand, nine hundred ninety-two".