40177916691 has 16 divisors (see below), whose sum is σ = 58453772160. Its totient is φ = 24344766720.

The previous prime is 40177916659. The next prime is 40177916729. The reversal of 40177916691 is 19661977104.

40177916691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40177916691 - 2⁵ = 40177916659 is a prime.

It is a super-2 number, since 2×40177916691² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40177916621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14040 + ... + 283818.

It is an arithmetic number, because the mean of its divisors is an integer number (3653360760).

Almost surely, 2^40177916691 is an apocalyptic number.

40177916691 is a deficient number, since it is larger than the sum of its proper divisors (18275855469).

40177916691 is a wasteful number, since it uses less digits than its factorization.

40177916691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274306.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 40177916691 in words is "forty billion, one hundred seventy-seven million, nine hundred sixteen thousand, six hundred ninety-one".