40707172091 has 4 divisors (see below), whose sum is σ = 41004304872. Its totient is φ = 40410039312.

The previous prime is 40707172039. The next prime is 40707172109. The reversal of 40707172091 is 19027170704.

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 40707172091 - 2²⁶ = 40640063227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40707172031) 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, 148566185 + ... + 148566458.

It is an arithmetic number, because the mean of its divisors is an integer number (10251076218).

Almost surely, 2^40707172091 is an apocalyptic number.

40707172091 is a deficient number, since it is larger than the sum of its proper divisors (297132781).

40707172091 is a wasteful number, since it uses less digits than its factorization.

40707172091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297132780.

The product of its (nonzero) digits is 24696, while the sum is 38.

The spelling of 40707172091 in words is "forty billion, seven hundred seven million, one hundred seventy-two thousand, ninety-one".