20734159597 has 2 divisors, whose sum is σ = 20734159598. Its totient is φ = 20734159596.

The previous prime is 20734159513. The next prime is 20734159601. The reversal of 20734159597 is 79595143702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14567041636 + 6167117961 = 120694^2 + 78531^2 .

It is a cyclic number.

It is not a de Polignac number, because 20734159597 - 2¹⁹ = 20733635309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20734159297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10367079798 + 10367079799.

It is an arithmetic number, because the mean of its divisors is an integer number (10367079799).

Almost surely, 2^20734159597 is an apocalyptic number.

It is an amenable number.

20734159597 is a deficient number, since it is larger than the sum of its proper divisors (1).

20734159597 is an equidigital number, since it uses as much as digits as its factorization.

20734159597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 52.

The spelling of 20734159597 in words is "twenty billion, seven hundred thirty-four million, one hundred fifty-nine thousand, five hundred ninety-seven".