15123103973 has 2 divisors, whose sum is σ = 15123103974. Its totient is φ = 15123103972.

The previous prime is 15123103909. The next prime is 15123103987. The reversal of 15123103973 is 37930132151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12832811524 + 2290292449 = 113282^2 + 47857^2 .

It is a cyclic number.

It is not a de Polignac number, because 15123103973 - 2⁶ = 15123103909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15123109973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561551986 + 7561551987.

It is an arithmetic number, because the mean of its divisors is an integer number (7561551987).

Almost surely, 2^15123103973 is an apocalyptic number.

It is an amenable number.

15123103973 is a deficient number, since it is larger than the sum of its proper divisors (1).

15123103973 is an equidigital number, since it uses as much as digits as its factorization.

15123103973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 35.

The spelling of 15123103973 in words is "fifteen billion, one hundred twenty-three million, one hundred three thousand, nine hundred seventy-three".