15772323473 has 2 divisors, whose sum is σ = 15772323474. Its totient is φ = 15772323472.

The previous prime is 15772323451. The next prime is 15772323487. The reversal of 15772323473 is 37432327751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13034103889 + 2738219584 = 114167^2 + 52328^2 .

It is a cyclic number.

It is not a de Polignac number, because 15772323473 - 2¹² = 15772319377 is a prime.

It is not a weakly prime, because it can be changed into another prime (15772323373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7886161736 + 7886161737.

It is an arithmetic number, because the mean of its divisors is an integer number (7886161737).

Almost surely, 2^15772323473 is an apocalyptic number.

It is an amenable number.

15772323473 is a deficient number, since it is larger than the sum of its proper divisors (1).

15772323473 is an equidigital number, since it uses as much as digits as its factorization.

15772323473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 44.

The spelling of 15772323473 in words is "fifteen billion, seven hundred seventy-two million, three hundred twenty-three thousand, four hundred seventy-three".