79293645643 has 2 divisors, whose sum is σ = 79293645644. Its totient is φ = 79293645642.

The previous prime is 79293645619. The next prime is 79293645677. The reversal of 79293645643 is 34654639297.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79293645643 - 2¹⁷ = 79293514571 is a prime.

It is not a weakly prime, because it can be changed into another prime (79293646643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39646822821 + 39646822822.

It is an arithmetic number, because the mean of its divisors is an integer number (39646822822).

Almost surely, 2^79293645643 is an apocalyptic number.

79293645643 is a deficient number, since it is larger than the sum of its proper divisors (1).

79293645643 is an equidigital number, since it uses as much as digits as its factorization.

79293645643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 58.

The spelling of 79293645643 in words is "seventy-nine billion, two hundred ninety-three million, six hundred forty-five thousand, six hundred forty-three".