15195123001 has 2 divisors, whose sum is σ = 15195123002. Its totient is φ = 15195123000.

The previous prime is 15195122981. The next prime is 15195123017. The reversal of 15195123001 is 10032159151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14412242601 + 782880400 = 120051^2 + 27980^2 .

It is a cyclic number.

It is not a de Polignac number, because 15195123001 - 2²¹ = 15193025849 is a prime.

It is not a weakly prime, because it can be changed into another prime (15195123071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7597561500 + 7597561501.

It is an arithmetic number, because the mean of its divisors is an integer number (7597561501).

Almost surely, 2^15195123001 is an apocalyptic number.

It is an amenable number.

15195123001 is a deficient number, since it is larger than the sum of its proper divisors (1).

15195123001 is an equidigital number, since it uses as much as digits as its factorization.

15195123001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 28.

The spelling of 15195123001 in words is "fifteen billion, one hundred ninety-five million, one hundred twenty-three thousand, one".