40997118591 has 72 divisors (see below), whose sum is σ = 72728409936. Its totient is φ = 21937893120.

The previous prime is 40997118583. The next prime is 40997118641. The reversal of 40997118591 is 19581179904.

40997118591 is a `hidden beast` number, since 40 + 9 + 9 + 7 + 1 + 1 + 8 + 591 = 666.

It is not a de Polignac number, because 40997118591 - 2³ = 40997118583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40997118541) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 650715 + ... + 710931.

Almost surely, 2^40997118591 is an apocalyptic number.

40997118591 is a deficient number, since it is larger than the sum of its proper divisors (31731291345).

40997118591 is a wasteful number, since it uses less digits than its factorization.

40997118591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60293 (or 60267 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 54.

The spelling of 40997118591 in words is "forty billion, nine hundred ninety-seven million, one hundred eighteen thousand, five hundred ninety-one".