40166872593 has 4 divisors (see below), whose sum is σ = 53555830128. Its totient is φ = 26777915060.

The previous prime is 40166872589. The next prime is 40166872597. The reversal of 40166872593 is 39527866104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40166872589) and next prime (40166872597).

It is a cyclic number.

It is not a de Polignac number, because 40166872593 - 2² = 40166872589 is a prime.

It is a super-2 number, since 2×40166872593² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40166872597) 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, 6694478763 + ... + 6694478768.

It is an arithmetic number, because the mean of its divisors is an integer number (13388957532).

It is a 1-persistent number, because it is pandigital, but 2⋅40166872593 = 80333745186 is not.

Almost surely, 2^40166872593 is an apocalyptic number.

It is an amenable number.

40166872593 is a deficient number, since it is larger than the sum of its proper divisors (13388957535).

40166872593 is a wasteful number, since it uses less digits than its factorization.

40166872593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388957534.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 40166872593 in words is "forty billion, one hundred sixty-six million, eight hundred seventy-two thousand, five hundred ninety-three".