30400912491 has 4 divisors (see below), whose sum is σ = 40534549992. Its totient is φ = 20267274992.

The previous prime is 30400912441. The next prime is 30400912523. The reversal of 30400912491 is 19421900403.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30400912491 - 2⁷ = 30400912363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30400912411) 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, 5066818746 + ... + 5066818751.

It is an arithmetic number, because the mean of its divisors is an integer number (10133637498).

Almost surely, 2^30400912491 is an apocalyptic number.

30400912491 is a deficient number, since it is larger than the sum of its proper divisors (10133637501).

30400912491 is a wasteful number, since it uses less digits than its factorization.

30400912491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133637500.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 30400912491 in words is "thirty billion, four hundred million, nine hundred twelve thousand, four hundred ninety-one".