79637309055529 has 2 divisors, whose sum is σ = 79637309055530. Its totient is φ = 79637309055528.

The previous prime is 79637309055481. The next prime is 79637309055533. The reversal of 79637309055529 is 92555090373697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79582046449129 + 55262606400 = 8920877^2 + 235080^2 .

It is a cyclic number.

It is not a de Polignac number, because 79637309055529 - 2¹¹ = 79637309053481 is a prime.

It is not a weakly prime, because it can be changed into another prime (79637309050529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39818654527764 + 39818654527765.

It is an arithmetic number, because the mean of its divisors is an integer number (39818654527765).

Almost surely, 2^{79637309055529} is an apocalyptic number.

It is an amenable number.

79637309055529 is a deficient number, since it is larger than the sum of its proper divisors (1).

79637309055529 is an equidigital number, since it uses as much as digits as its factorization.

79637309055529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 482233500, while the sum is 70.

The spelling of 79637309055529 in words is "seventy-nine trillion, six hundred thirty-seven billion, three hundred nine million, fifty-five thousand, five hundred twenty-nine".