72116519 has 2 divisors, whose sum is σ = 72116520. Its totient is φ = 72116518.

The previous prime is 72116503. The next prime is 72116531. The reversal of 72116519 is 91561127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72116519 - 2⁴ = 72116503 is a prime.

It is a super-2 number, since 2×72116519² = 10401584625354722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72106519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36058259 + 36058260.

It is an arithmetic number, because the mean of its divisors is an integer number (36058260).

Almost surely, 2^72116519 is an apocalyptic number.

72116519 is a deficient number, since it is larger than the sum of its proper divisors (1).

72116519 is an equidigital number, since it uses as much as digits as its factorization.

72116519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 72116519 is about 8492.1445465795. The cubic root of 72116519 is about 416.2410596666.

The spelling of 72116519 in words is "seventy-two million, one hundred sixteen thousand, five hundred nineteen".