30072661249 has 4 divisors (see below), whose sum is σ = 30073560660. Its totient is φ = 30071761840.

The previous prime is 30072661237. The next prime is 30072661261. The reversal of 30072661249 is 94216627003.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (30072661237) and next prime (30072661261).

It can be written as a sum of positive squares in 2 ways, for example, as 11892993025 + 18179668224 = 109055^2 + 134832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30072661249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30072661219) 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, 397534 + ... + 467095.

It is an arithmetic number, because the mean of its divisors is an integer number (7518390165).

Almost surely, 2^30072661249 is an apocalyptic number.

It is an amenable number.

30072661249 is a deficient number, since it is larger than the sum of its proper divisors (899411).

30072661249 is an equidigital number, since it uses as much as digits as its factorization.

30072661249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899410.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 30072661249 in words is "thirty billion, seventy-two million, six hundred sixty-one thousand, two hundred forty-nine".