30409012865 has 16 divisors (see below), whose sum is σ = 45495043200. Its totient is φ = 18956267520.

The previous prime is 30409012861. The next prime is 30409012891. The reversal of 30409012865 is 56821090403.

It is a happy number.

It is not a de Polignac number, because 30409012865 - 2² = 30409012861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30409012861) 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, 39491840 + ... + 39492609.

It is an arithmetic number, because the mean of its divisors is an integer number (2843440200).

Almost surely, 2^30409012865 is an apocalyptic number.

30409012865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30409012865 is a deficient number, since it is larger than the sum of its proper divisors (15086030335).

30409012865 is a wasteful number, since it uses less digits than its factorization.

30409012865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78984472.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 30409012865 in words is "thirty billion, four hundred nine million, twelve thousand, eight hundred sixty-five".