15432120097 has 2 divisors, whose sum is σ = 15432120098. Its totient is φ = 15432120096.

The previous prime is 15432119999. The next prime is 15432120103. The reversal of 15432120097 is 79002123451.

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., 12313009296 + 3119110801 = 110964^2 + 55849^2 .

It is an emirp because it is prime and its reverse (79002123451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15432120097 - 2¹¹ = 15432118049 is a prime.

It is not a weakly prime, because it can be changed into another prime (15432121097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7716060048 + 7716060049.

It is an arithmetic number, because the mean of its divisors is an integer number (7716060049).

Almost surely, 2^15432120097 is an apocalyptic number.

It is an amenable number.

15432120097 is a deficient number, since it is larger than the sum of its proper divisors (1).

15432120097 is an equidigital number, since it uses as much as digits as its factorization.

15432120097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 15432120097 in words is "fifteen billion, four hundred thirty-two million, one hundred twenty thousand, ninety-seven".