20165927465 has 16 divisors (see below), whose sum is σ = 25292131200. Its totient is φ = 15406334592.

The previous prime is 20165927417. The next prime is 20165927501. The reversal of 20165927465 is 56472956102.

It is a cyclic number.

It is not a de Polignac number, because 20165927465 - 2⁸ = 20165927209 is a prime.

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, 70460 + ... + 212829.

It is an arithmetic number, because the mean of its divisors is an integer number (1580758200).

Almost surely, 2^20165927465 is an apocalyptic number.

It is an amenable number.

20165927465 is a deficient number, since it is larger than the sum of its proper divisors (5126203735).

20165927465 is a wasteful number, since it uses less digits than its factorization.

20165927465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283936.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 20165927465 in words is "twenty billion, one hundred sixty-five million, nine hundred twenty-seven thousand, four hundred sixty-five".