72745086287 has 2 divisors, whose sum is σ = 72745086288. Its totient is φ = 72745086286.

The previous prime is 72745086199. The next prime is 72745086313. The reversal of 72745086287 is 78268054727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72745086287 - 2²⁰ = 72744037711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72745086487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36372543143 + 36372543144.

It is an arithmetic number, because the mean of its divisors is an integer number (36372543144).

Almost surely, 2^72745086287 is an apocalyptic number.

72745086287 is a deficient number, since it is larger than the sum of its proper divisors (1).

72745086287 is an equidigital number, since it uses as much as digits as its factorization.

72745086287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10536960, while the sum is 56.

The spelling of 72745086287 in words is "seventy-two billion, seven hundred forty-five million, eighty-six thousand, two hundred eighty-seven".