40193721630719 has 4 divisors (see below), whose sum is σ = 40194215656296. Its totient is φ = 40193227605144.

The previous prime is 40193721630709. The next prime is 40193721630793. The reversal of 40193721630719 is 91703612739104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40193721630719 - 2⁸ = 40193721630463 is a prime.

It is a super-2 number, since 2×40193721630719² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40193721630709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246890729 + ... + 247053474.

It is an arithmetic number, because the mean of its divisors is an integer number (10048553914074).

Almost surely, 2^{40193721630719} is an apocalyptic number.

40193721630719 is a deficient number, since it is larger than the sum of its proper divisors (494025577).

40193721630719 is an equidigital number, since it uses as much as digits as its factorization.

40193721630719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494025576.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 40193721630719 in words is "forty trillion, one hundred ninety-three billion, seven hundred twenty-one million, six hundred thirty thousand, seven hundred nineteen".