30709836165 has 16 divisors (see below), whose sum is σ = 49145745600. Its totient is φ = 16375243392.

The previous prime is 30709836161. The next prime is 30709836197. The reversal of 30709836165 is 56163890703.

It is a happy number.

It is not a de Polignac number, because 30709836165 - 2² = 30709836161 is a prime.

It is a super-2 number, since 2×30709836165² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30709836161) 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, 131475 + ... + 280544.

It is an arithmetic number, because the mean of its divisors is an integer number (3071609100).

Almost surely, 2^30709836165 is an apocalyptic number.

It is an amenable number.

30709836165 is a deficient number, since it is larger than the sum of its proper divisors (18435909435).

30709836165 is a wasteful number, since it uses less digits than its factorization.

30709836165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416996.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 30709836165 in words is "thirty billion, seven hundred nine million, eight hundred thirty-six thousand, one hundred sixty-five".