40681021273940 has 24 divisors (see below), whose sum is σ = 86213907475080. Its totient is φ = 16123120357248.

The previous prime is 40681021273927. The next prime is 40681021273967. The reversal of 40681021273940 is 4937212018604.

It can be written as a sum of positive squares in 4 ways, for example, as 15985011511876 + 24696009762064 = 3998126^2 + 4969508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9330507287 + ... + 9330511646.

It is an arithmetic number, because the mean of its divisors is an integer number (3592246144795).

Almost surely, 2^{40681021273940} is an apocalyptic number.

It is an amenable number.

40681021273940 is an abundant number, since it is smaller than the sum of its proper divisors (45532886201140).

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

40681021273940 is a wasteful number, since it uses less digits than its factorization.

40681021273940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18661019051 (or 18661019049 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 40681021273940 in words is "forty trillion, six hundred eighty-one billion, twenty-one million, two hundred seventy-three thousand, nine hundred forty".