3129894765623 has 2 divisors, whose sum is σ = 3129894765624. Its totient is φ = 3129894765622.

The previous prime is 3129894765559. The next prime is 3129894765667. The reversal of 3129894765623 is 3265674989213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3129894765623 - 2⁶ = 3129894765559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3129894765623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3129894725623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564947382811 + 1564947382812.

It is an arithmetic number, because the mean of its divisors is an integer number (1564947382812).

Almost surely, 2^{3129894765623} is an apocalyptic number.

3129894765623 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129894765623 is an equidigital number, since it uses as much as digits as its factorization.

3129894765623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117573120, while the sum is 65.

The spelling of 3129894765623 in words is "three trillion, one hundred twenty-nine billion, eight hundred ninety-four million, seven hundred sixty-five thousand, six hundred twenty-three".