40041213231997 has 8 divisors (see below), whose sum is σ = 40600052626616. Its totient is φ = 39485354314752.

The previous prime is 40041213231989. The next prime is 40041213232043. The reversal of 40041213231997 is 79913231214004.

It can be written as a sum of positive squares in 4 ways, for example, as 1191559995396 + 38849653236601 = 1091586^2 + 6232949^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40041213231997 - 2³ = 40041213231989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40041213231977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745092288 + ... + 745146025.

It is an arithmetic number, because the mean of its divisors is an integer number (5075006578327).

Almost surely, 2^{40041213231997} is an apocalyptic number.

It is an amenable number.

40041213231997 is a deficient number, since it is larger than the sum of its proper divisors (558839394619).

40041213231997 is a wasteful number, since it uses less digits than its factorization.

40041213231997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490238687.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 40041213231997 in words is "forty trillion, forty-one billion, two hundred thirteen million, two hundred thirty-one thousand, nine hundred ninety-seven".