27916979229515 has 16 divisors (see below), whose sum is σ = 36295892015328. Its totient is φ = 20531009619456.

The previous prime is 27916979229487. The next prime is 27916979229593. The reversal of 27916979229515 is 51592297961972.

It is a cyclic number.

It is not a de Polignac number, because 27916979229515 - 2¹⁴ = 27916979213131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3819008552 + ... + 3819015861.

It is an arithmetic number, because the mean of its divisors is an integer number (2268493250958).

Almost surely, 2^{27916979229515} is an apocalyptic number.

27916979229515 is a deficient number, since it is larger than the sum of its proper divisors (8378912785813).

27916979229515 is a wasteful number, since it uses less digits than its factorization.

27916979229515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638024478.

The product of its digits is 385786800, while the sum is 74.

The spelling of 27916979229515 in words is "twenty-seven trillion, nine hundred sixteen billion, nine hundred seventy-nine million, two hundred twenty-nine thousand, five hundred fifteen".