40131734120621 has 16 divisors (see below), whose sum is σ = 47217827791680. Its totient is φ = 33626939512320.

The previous prime is 40131734120593. The next prime is 40131734120623. The reversal of 40131734120621 is 12602143713104.

It is not a de Polignac number, because 40131734120621 - 2¹⁸ = 40131733858477 is a prime.

It is a super-2 number, since 2×40131734120621² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131734120623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208404131 + ... + 208596608.

It is an arithmetic number, because the mean of its divisors is an integer number (2951114236980).

Almost surely, 2^{40131734120621} is an apocalyptic number.

It is an amenable number.

40131734120621 is a deficient number, since it is larger than the sum of its proper divisors (7086093671059).

40131734120621 is a wasteful number, since it uses less digits than its factorization.

40131734120621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417001436.

The product of its (nonzero) digits is 24192, while the sum is 35.

Adding to 40131734120621 its reverse (12602143713104), we get a palindrome (52733877833725).

The spelling of 40131734120621 in words is "forty trillion, one hundred thirty-one billion, seven hundred thirty-four million, one hundred twenty thousand, six hundred twenty-one".