30123244549 has 4 divisors (see below), whose sum is σ = 30125072236. Its totient is φ = 30121416864.

The previous prime is 30123244513. The next prime is 30123244583. The reversal of 30123244549 is 94544232103.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2738952225 + 27384292324 = 52335^2 + 165482^2 .

It is a cyclic number.

It is not a de Polignac number, because 30123244549 - 2¹⁷ = 30123113477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123244649) 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, 888894 + ... + 922159.

It is an arithmetic number, because the mean of its divisors is an integer number (7531268059).

Almost surely, 2^30123244549 is an apocalyptic number.

It is an amenable number.

30123244549 is a deficient number, since it is larger than the sum of its proper divisors (1827687).

30123244549 is a wasteful number, since it uses less digits than its factorization.

30123244549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827686.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 30123244549 in words is "thirty billion, one hundred twenty-three million, two hundred forty-four thousand, five hundred forty-nine".