30689965357 has 2 divisors, whose sum is σ = 30689965358. Its totient is φ = 30689965356.

The previous prime is 30689965303. The next prime is 30689965363. The reversal of 30689965357 is 75356998603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27487650436 + 3202314921 = 165794^2 + 56589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30689965357 is a prime.

It is a super-2 number, since 2×30689965357² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30689965295 and 30689965304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30689965367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15344982678 + 15344982679.

It is an arithmetic number, because the mean of its divisors is an integer number (15344982679).

Almost surely, 2^30689965357 is an apocalyptic number.

It is an amenable number.

30689965357 is a deficient number, since it is larger than the sum of its proper divisors (1).

30689965357 is an equidigital number, since it uses as much as digits as its factorization.

30689965357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36741600, while the sum is 61.

The spelling of 30689965357 in words is "thirty billion, six hundred eighty-nine million, nine hundred sixty-five thousand, three hundred fifty-seven".