30744620457 has 4 divisors (see below), whose sum is σ = 40992827280. Its totient is φ = 20496413636.

The previous prime is 30744620449. The next prime is 30744620477. The reversal of 30744620457 is 75402644703.

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 30744620457 - 2³ = 30744620449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30744620447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5124103407 + ... + 5124103412.

It is an arithmetic number, because the mean of its divisors is an integer number (10248206820).

Almost surely, 2^30744620457 is an apocalyptic number.

It is an amenable number.

30744620457 is a deficient number, since it is larger than the sum of its proper divisors (10248206823).

30744620457 is a wasteful number, since it uses less digits than its factorization.

30744620457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248206822.

The product of its (nonzero) digits is 564480, while the sum is 42.

The spelling of 30744620457 in words is "thirty billion, seven hundred forty-four million, six hundred twenty thousand, four hundred fifty-seven".