40688623771 has 2 divisors, whose sum is σ = 40688623772. Its totient is φ = 40688623770.

The previous prime is 40688623757. The next prime is 40688623841. The reversal of 40688623771 is 17732688604.

40688623771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40688623771 - 2³⁵ = 6328885403 is a prime.

It is not a weakly prime, because it can be changed into another prime (40688620771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20344311885 + 20344311886.

It is an arithmetic number, because the mean of its divisors is an integer number (20344311886).

Almost surely, 2^40688623771 is an apocalyptic number.

40688623771 is a deficient number, since it is larger than the sum of its proper divisors (1).

40688623771 is an equidigital number, since it uses as much as digits as its factorization.

40688623771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 40688623771 in words is "forty billion, six hundred eighty-eight million, six hundred twenty-three thousand, seven hundred seventy-one".