40596657291 has 12 divisors (see below), whose sum is σ = 58674193032. Its totient is φ = 27048479616.

The previous prime is 40596657251. The next prime is 40596657301. The reversal of 40596657291 is 19275669504.

40596657291 is a `hidden beast` number, since 4 + 0 + 5 + 9 + 66 + 572 + 9 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-40596657291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40596657251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1313761 + ... + 1344306.

It is an arithmetic number, because the mean of its divisors is an integer number (4889516086).

Almost surely, 2^40596657291 is an apocalyptic number.

40596657291 is a deficient number, since it is larger than the sum of its proper divisors (18077535741).

40596657291 is a wasteful number, since it uses less digits than its factorization.

40596657291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659770 (or 2659767 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 40596657291 in words is "forty billion, five hundred ninety-six million, six hundred fifty-seven thousand, two hundred ninety-one".