102640310407 has 2 divisors, whose sum is σ = 102640310408. Its totient is φ = 102640310406.

The previous prime is 102640310369. The next prime is 102640310441. The reversal of 102640310407 is 704013046201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102640310407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102640310447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51320155203 + 51320155204.

It is an arithmetic number, because the mean of its divisors is an integer number (51320155204).

Almost surely, 2^102640310407 is an apocalyptic number.

102640310407 is a deficient number, since it is larger than the sum of its proper divisors (1).

102640310407 is an equidigital number, since it uses as much as digits as its factorization.

102640310407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 102640310407 its reverse (704013046201), we get a palindrome (806653356608).

The spelling of 102640310407 in words is "one hundred two billion, six hundred forty million, three hundred ten thousand, four hundred seven".