20727934597 has 2 divisors, whose sum is σ = 20727934598. Its totient is φ = 20727934596.

The previous prime is 20727934583. The next prime is 20727934603. The reversal of 20727934597 is 79543972702.

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., 20699727876 + 28206721 = 143874^2 + 5311^2 .

It is a cyclic number.

It is not a de Polignac number, because 20727934597 - 2²³ = 20719545989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20727935597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363967298 + 10363967299.

It is an arithmetic number, because the mean of its divisors is an integer number (10363967299).

Almost surely, 2^20727934597 is an apocalyptic number.

It is an amenable number.

20727934597 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727934597 is an equidigital number, since it uses as much as digits as its factorization.

20727934597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 20727934597 in words is "twenty billion, seven hundred twenty-seven million, nine hundred thirty-four thousand, five hundred ninety-seven".