172796387479 has 2 divisors, whose sum is σ = 172796387480. Its totient is φ = 172796387478.

The previous prime is 172796387461. The next prime is 172796387597. The reversal of 172796387479 is 974783697271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172796387479 - 2¹¹ = 172796385431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172796387419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86398193739 + 86398193740.

It is an arithmetic number, because the mean of its divisors is an integer number (86398193740).

Almost surely, 2^172796387479 is an apocalyptic number.

172796387479 is a deficient number, since it is larger than the sum of its proper divisors (1).

172796387479 is an equidigital number, since it uses as much as digits as its factorization.

172796387479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224042112, while the sum is 70.

The spelling of 172796387479 in words is "one hundred seventy-two billion, seven hundred ninety-six million, three hundred eighty-seven thousand, four hundred seventy-nine".