20120533376597 has 2 divisors, whose sum is σ = 20120533376598. Its totient is φ = 20120533376596.

The previous prime is 20120533376557. The next prime is 20120533376621. The reversal of 20120533376597 is 79567333502102.

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., 19397558998756 + 722974377841 = 4404266^2 + 850279^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120533376597 - 2⁶ = 20120533376533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120533376557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060266688298 + 10060266688299.

It is an arithmetic number, because the mean of its divisors is an integer number (10060266688299).

Almost surely, 2^{20120533376597} is an apocalyptic number.

It is an amenable number.

20120533376597 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120533376597 is an equidigital number, since it uses as much as digits as its factorization.

20120533376597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7144200, while the sum is 53.

Adding to 20120533376597 its reverse (79567333502102), we get a palindrome (99687866878699).

The spelling of 20120533376597 in words is "twenty trillion, one hundred twenty billion, five hundred thirty-three million, three hundred seventy-six thousand, five hundred ninety-seven".