16749165465 has 12 divisors (see below), whose sum is σ = 29031886884. Its totient is φ = 8932888224.

The previous prime is 16749165449. The next prime is 16749165467. The reversal of 16749165465 is 56456194761.

16749165465 is a `hidden beast` number, since 1 + 6 + 7 + 4 + 91 + 6 + 546 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8149756176 + 8599409289 = 90276^2 + 92733^2 .

It is not a de Polignac number, because 16749165465 - 2⁴ = 16749165449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16749165467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186101794 + ... + 186101883.

It is an arithmetic number, because the mean of its divisors is an integer number (2419323907).

Almost surely, 2^16749165465 is an apocalyptic number.

16749165465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16749165465 is a deficient number, since it is larger than the sum of its proper divisors (12282721419).

16749165465 is a wasteful number, since it uses less digits than its factorization.

16749165465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372203688 (or 372203685 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 16749165465 in words is "sixteen billion, seven hundred forty-nine million, one hundred sixty-five thousand, four hundred sixty-five".