15240000197 has 2 divisors, whose sum is σ = 15240000198. Its totient is φ = 15240000196.

The previous prime is 15240000143. The next prime is 15240000203. The reversal of 15240000197 is 79100004251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12324108196 + 2915892001 = 111014^2 + 53999^2 .

It is a cyclic number.

It is not a de Polignac number, because 15240000197 - 2²⁰ = 15238951621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15240000107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7620000098 + 7620000099.

It is an arithmetic number, because the mean of its divisors is an integer number (7620000099).

Almost surely, 2^15240000197 is an apocalyptic number.

It is an amenable number.

15240000197 is a deficient number, since it is larger than the sum of its proper divisors (1).

15240000197 is an equidigital number, since it uses as much as digits as its factorization.

15240000197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The spelling of 15240000197 in words is "fifteen billion, two hundred forty million, one hundred ninety-seven", and thus it is an aban number.