197015691269 has 2 divisors, whose sum is σ = 197015691270. Its totient is φ = 197015691268.

The previous prime is 197015691263. The next prime is 197015691371. The reversal of 197015691269 is 962196510791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107905680100 + 89110011169 = 328490^2 + 298513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197015691269 is a prime.

It is a super-2 number, since 2×197015691269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197015691263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98507845634 + 98507845635.

It is an arithmetic number, because the mean of its divisors is an integer number (98507845635).

Almost surely, 2^197015691269 is an apocalyptic number.

It is an amenable number.

197015691269 is a deficient number, since it is larger than the sum of its proper divisors (1).

197015691269 is an equidigital number, since it uses as much as digits as its factorization.

197015691269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The spelling of 197015691269 in words is "one hundred ninety-seven billion, fifteen million, six hundred ninety-one thousand, two hundred sixty-nine".