72836915197 has 2 divisors, whose sum is σ = 72836915198. Its totient is φ = 72836915196.

The previous prime is 72836915189. The next prime is 72836915273. The reversal of 72836915197 is 79151963827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63470740356 + 9366174841 = 251934^2 + 96779^2 .

It is a cyclic number.

It is not a de Polignac number, because 72836915197 - 2³ = 72836915189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72836915147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36418457598 + 36418457599.

It is an arithmetic number, because the mean of its divisors is an integer number (36418457599).

Almost surely, 2^72836915197 is an apocalyptic number.

It is an amenable number.

72836915197 is a deficient number, since it is larger than the sum of its proper divisors (1).

72836915197 is an equidigital number, since it uses as much as digits as its factorization.

72836915197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 58.

The spelling of 72836915197 in words is "seventy-two billion, eight hundred thirty-six million, nine hundred fifteen thousand, one hundred ninety-seven".