40991322690919 has 4 divisors (see below), whose sum is σ = 40991419519344. Its totient is φ = 40991225862496.

The previous prime is 40991322690883. The next prime is 40991322690949. The reversal of 40991322690919 is 91909622319904.

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 40991322690919 - 2¹¹ = 40991322688871 is a prime.

It is a super-2 number, since 2×40991322690919² (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 (40991322690949) 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, 47776402 + ... + 48626815.

It is an arithmetic number, because the mean of its divisors is an integer number (10247854879836).

Almost surely, 2^{40991322690919} is an apocalyptic number.

40991322690919 is a deficient number, since it is larger than the sum of its proper divisors (96828425).

40991322690919 is an equidigital number, since it uses as much as digits as its factorization.

40991322690919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96828424.

The product of its (nonzero) digits is 17006112, while the sum is 64.

The spelling of 40991322690919 in words is "forty trillion, nine hundred ninety-one billion, three hundred twenty-two million, six hundred ninety thousand, nine hundred nineteen".