81200308315 has 8 divisors (see below), whose sum is σ = 111360422880. Its totient is φ = 55680211392.

The previous prime is 81200308307. The next prime is 81200308333. The reversal of 81200308315 is 51380300218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81200308315 - 2³ = 81200308307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160004370 + ... + 1160004439.

It is an arithmetic number, because the mean of its divisors is an integer number (13920052860).

Almost surely, 2^81200308315 is an apocalyptic number.

81200308315 is a deficient number, since it is larger than the sum of its proper divisors (30160114565).

81200308315 is a wasteful number, since it uses less digits than its factorization.

81200308315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320008821.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 81200308315 in words is "eighty-one billion, two hundred million, three hundred eight thousand, three hundred fifteen".