27320515318723 has 16 divisors (see below), whose sum is σ = 30094562474496. Its totient is φ = 24594878226240.

The previous prime is 27320515318721. The next prime is 27320515318757. The reversal of 27320515318723 is 32781351502372.

It is a cyclic number.

It is not a de Polignac number, because 27320515318723 - 2¹ = 27320515318721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27320515318721) 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, 34989511 + ... + 35761807.

It is an arithmetic number, because the mean of its divisors is an integer number (1880910154656).

Almost surely, 2^{27320515318723} is an apocalyptic number.

27320515318723 is a deficient number, since it is larger than the sum of its proper divisors (2774047155773).

27320515318723 is a wasteful number, since it uses less digits than its factorization.

27320515318723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803634.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 27320515318723 in words is "twenty-seven trillion, three hundred twenty billion, five hundred fifteen million, three hundred eighteen thousand, seven hundred twenty-three".