30577620397 has 2 divisors, whose sum is σ = 30577620398. Its totient is φ = 30577620396.

The previous prime is 30577620313. The next prime is 30577620419. The reversal of 30577620397 is 79302677503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26280948996 + 4296671401 = 162114^2 + 65549^2 .

It is a cyclic number.

It is not a de Polignac number, because 30577620397 - 2¹¹ = 30577618349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30577620397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30577623397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15288810198 + 15288810199.

It is an arithmetic number, because the mean of its divisors is an integer number (15288810199).

Almost surely, 2^30577620397 is an apocalyptic number.

It is an amenable number.

30577620397 is a deficient number, since it is larger than the sum of its proper divisors (1).

30577620397 is an equidigital number, since it uses as much as digits as its factorization.

30577620397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1666980, while the sum is 49.

The spelling of 30577620397 in words is "thirty billion, five hundred seventy-seven million, six hundred twenty thousand, three hundred ninety-seven".