40195554517 has 4 divisors (see below), whose sum is σ = 40953961260. Its totient is φ = 39437147776.

The previous prime is 40195554479. The next prime is 40195554523. The reversal of 40195554517 is 71545559104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20665212516 + 19530342001 = 143754^2 + 139751^2 .

It is a cyclic number.

It is not a de Polignac number, because 40195554517 - 2²⁷ = 40061336789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40195554527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379203292 + ... + 379203397.

It is an arithmetic number, because the mean of its divisors is an integer number (10238490315).

Almost surely, 2^40195554517 is an apocalyptic number.

It is an amenable number.

40195554517 is a deficient number, since it is larger than the sum of its proper divisors (758406743).

40195554517 is an equidigital number, since it uses as much as digits as its factorization.

40195554517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758406742.

The product of its (nonzero) digits is 630000, while the sum is 46.

The spelling of 40195554517 in words is "forty billion, one hundred ninety-five million, five hundred fifty-four thousand, five hundred seventeen".