40695617887 has 2 divisors, whose sum is σ = 40695617888. Its totient is φ = 40695617886.

The previous prime is 40695617789. The next prime is 40695617923. The reversal of 40695617887 is 78871659604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40695617887 - 2⁷ = 40695617759 is a prime.

It is a super-2 number, since 2×40695617887² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40695617087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20347808943 + 20347808944.

It is an arithmetic number, because the mean of its divisors is an integer number (20347808944).

Almost surely, 2^40695617887 is an apocalyptic number.

40695617887 is a deficient number, since it is larger than the sum of its proper divisors (1).

40695617887 is an equidigital number, since it uses as much as digits as its factorization.

40695617887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 40695617887 in words is "forty billion, six hundred ninety-five million, six hundred seventeen thousand, eight hundred eighty-seven".