40191187605 has 16 divisors (see below), whose sum is σ = 64405924800. Its totient is φ = 21401958528.

The previous prime is 40191187577. The next prime is 40191187627. The reversal of 40191187605 is 50678119104.

It is not a de Polignac number, because 40191187605 - 2⁵ = 40191187573 is a prime.

It is a super-2 number, since 2×40191187605² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2073880 + ... + 2093169.

It is an arithmetic number, because the mean of its divisors is an integer number (4025370300).

Almost surely, 2^40191187605 is an apocalyptic number.

It is an amenable number.

40191187605 is a deficient number, since it is larger than the sum of its proper divisors (24214737195).

40191187605 is a wasteful number, since it uses less digits than its factorization.

40191187605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167700.

The product of its (nonzero) digits is 60480, while the sum is 42.

The spelling of 40191187605 in words is "forty billion, one hundred ninety-one million, one hundred eighty-seven thousand, six hundred five".