30072661237 has 2 divisors, whose sum is σ = 30072661238. Its totient is φ = 30072661236.

The previous prime is 30072661219. The next prime is 30072661261. The reversal of 30072661237 is 73216627003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16854790276 + 13217870961 = 129826^2 + 114969^2 .

It is a cyclic number.

It is not a de Polignac number, because 30072661237 - 2¹¹ = 30072659189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30072661196 and 30072661205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30072661277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15036330618 + 15036330619.

It is an arithmetic number, because the mean of its divisors is an integer number (15036330619).

Almost surely, 2^30072661237 is an apocalyptic number.

It is an amenable number.

30072661237 is a deficient number, since it is larger than the sum of its proper divisors (1).

30072661237 is an equidigital number, since it uses as much as digits as its factorization.

30072661237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 30072661237 in words is "thirty billion, seventy-two million, six hundred sixty-one thousand, two hundred thirty-seven".