82615429979 has 2 divisors, whose sum is σ = 82615429980. Its totient is φ = 82615429978.

The previous prime is 82615429961. The next prime is 82615429993. The reversal of 82615429979 is 97992451628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82615429979 - 2³⁶ = 13895953243 is a prime.

It is not a weakly prime, because it can be changed into another prime (82615429879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41307714989 + 41307714990.

It is an arithmetic number, because the mean of its divisors is an integer number (41307714990).

Almost surely, 2^82615429979 is an apocalyptic number.

82615429979 is a deficient number, since it is larger than the sum of its proper divisors (1).

82615429979 is an equidigital number, since it uses as much as digits as its factorization.

82615429979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 62.

Adding to 82615429979 its sum of digits (62), we get a square (82615430041 = 287429²).

The spelling of 82615429979 in words is "eighty-two billion, six hundred fifteen million, four hundred twenty-nine thousand, nine hundred seventy-nine".