40731639994 has 32 divisors (see below), whose sum is σ = 65951625600. Its totient is φ = 18803381760.

The previous prime is 40731639989. The next prime is 40731640003. The reversal of 40731639994 is 49993613704.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1508787 + ... + 1535545.

It is an arithmetic number, because the mean of its divisors is an integer number (2060988300).

Almost surely, 2^40731639994 is an apocalyptic number.

40731639994 is a deficient number, since it is larger than the sum of its proper divisors (25219985606).

40731639994 is a wasteful number, since it uses less digits than its factorization.

40731639994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27798.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The spelling of 40731639994 in words is "forty billion, seven hundred thirty-one million, six hundred thirty-nine thousand, nine hundred ninety-four".