40102217971 has 2 divisors, whose sum is σ = 40102217972. Its totient is φ = 40102217970.

The previous prime is 40102217891. The next prime is 40102218011. The reversal of 40102217971 is 17971220104.

40102217971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40102217971 - 2⁷ = 40102217843 is a prime.

It is not a weakly prime, because it can be changed into another prime (40102217671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20051108985 + 20051108986.

It is an arithmetic number, because the mean of its divisors is an integer number (20051108986).

Almost surely, 2^40102217971 is an apocalyptic number.

40102217971 is a deficient number, since it is larger than the sum of its proper divisors (1).

40102217971 is an equidigital number, since it uses as much as digits as its factorization.

40102217971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 40102217971 in words is "forty billion, one hundred two million, two hundred seventeen thousand, nine hundred seventy-one".