72302307215 has 16 divisors (see below), whose sum is σ = 94002895008. Its totient is φ = 53173349376.

The previous prime is 72302307211. The next prime is 72302307247. The reversal of 72302307215 is 51270320327.

It is a cyclic number.

It is not a de Polignac number, because 72302307215 - 2² = 72302307211 is a prime.

It is a super-2 number, since 2×72302307215² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72302307211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9887222 + ... + 9894531.

It is an arithmetic number, because the mean of its divisors is an integer number (5875180938).

Almost surely, 2^72302307215 is an apocalyptic number.

72302307215 is a deficient number, since it is larger than the sum of its proper divisors (21700587793).

72302307215 is a wasteful number, since it uses less digits than its factorization.

72302307215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19781818.

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 72302307215 in words is "seventy-two billion, three hundred two million, three hundred seven thousand, two hundred fifteen".