30646521497 has 2 divisors, whose sum is σ = 30646521498. Its totient is φ = 30646521496.

The previous prime is 30646521473. The next prime is 30646521509. The reversal of 30646521497 is 79412564603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27125760601 + 3520760896 = 164699^2 + 59336^2 .

It is a cyclic number.

It is not a de Polignac number, because 30646521497 - 2¹⁰ = 30646520473 is a prime.

It is not a weakly prime, because it can be changed into another prime (30646521427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15323260748 + 15323260749.

It is an arithmetic number, because the mean of its divisors is an integer number (15323260749).

Almost surely, 2^30646521497 is an apocalyptic number.

It is an amenable number.

30646521497 is a deficient number, since it is larger than the sum of its proper divisors (1).

30646521497 is an equidigital number, since it uses as much as digits as its factorization.

30646521497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 30646521497 in words is "thirty billion, six hundred forty-six million, five hundred twenty-one thousand, four hundred ninety-seven".