30636165121 has 4 divisors (see below), whose sum is σ = 31624428544. Its totient is φ = 29647901700.

The previous prime is 30636165101. The next prime is 30636165139. The reversal of 30636165121 is 12156163603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30636165121 - 2⁹ = 30636164609 is a prime.

It is a super-2 number, since 2×30636165121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30636165101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494131665 + ... + 494131726.

It is an arithmetic number, because the mean of its divisors is an integer number (7906107136).

Almost surely, 2^30636165121 is an apocalyptic number.

30636165121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30636165121 is a deficient number, since it is larger than the sum of its proper divisors (988263423).

30636165121 is an equidigital number, since it uses as much as digits as its factorization.

30636165121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988263422.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 30636165121 in words is "thirty billion, six hundred thirty-six million, one hundred sixty-five thousand, one hundred twenty-one".