30220947697 has 2 divisors, whose sum is σ = 30220947698. Its totient is φ = 30220947696.

The previous prime is 30220947637. The next prime is 30220947737. The reversal of 30220947697 is 79674902203.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26262147136 + 3958800561 = 162056^2 + 62919^2 .

It is a cyclic number.

It is not a de Polignac number, because 30220947697 - 2²³ = 30212559089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30220947697.

It is not a weakly prime, because it can be changed into another prime (30220947637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110473848 + 15110473849.

It is an arithmetic number, because the mean of its divisors is an integer number (15110473849).

Almost surely, 2^30220947697 is an apocalyptic number.

It is an amenable number.

30220947697 is a deficient number, since it is larger than the sum of its proper divisors (1).

30220947697 is an equidigital number, since it uses as much as digits as its factorization.

30220947697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 30220947697 in words is "thirty billion, two hundred twenty million, nine hundred forty-seven thousand, six hundred ninety-seven".