36216899478865 has 32 divisors (see below), whose sum is σ = 49979366793216. Its totient is φ = 24679242440640.

The previous prime is 36216899478817. The next prime is 36216899478923. The reversal of 36216899478865 is 56887499861263.

It is a happy number.

It is not a de Polignac number, because 36216899478865 - 2³¹ = 36214751995217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49745620 + ... + 50468410.

It is an arithmetic number, because the mean of its divisors is an integer number (1561855212288).

Almost surely, 2^{36216899478865} is an apocalyptic number.

36216899478865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

36216899478865 is a deficient number, since it is larger than the sum of its proper divisors (13762467314351).

36216899478865 is a wasteful number, since it uses less digits than its factorization.

36216899478865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731749.

The product of its digits is 7524679680, while the sum is 82.

The spelling of 36216899478865 in words is "thirty-six trillion, two hundred sixteen billion, eight hundred ninety-nine million, four hundred seventy-eight thousand, eight hundred sixty-five".