40496881940 has 24 divisors (see below), whose sum is σ = 85206705192. Its totient is φ = 16167656960.

The previous prime is 40496881889. The next prime is 40496881969. The reversal of 40496881940 is 4918869404.

It can be written as a sum of positive squares in 4 ways, for example, as 6815823364 + 33681058576 = 82558^2 + 183524^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1932809 + ... + 1953648.

It is an arithmetic number, because the mean of its divisors is an integer number (3550279383).

Almost surely, 2^40496881940 is an apocalyptic number.

It is an amenable number.

40496881940 is an abundant number, since it is smaller than the sum of its proper divisors (44709823252).

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

40496881940 is a wasteful number, since it uses less digits than its factorization.

40496881940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886987 (or 3886985 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 40496881940 in words is "forty billion, four hundred ninety-six million, eight hundred eighty-one thousand, nine hundred forty".