15235320473 has 2 divisors, whose sum is σ = 15235320474. Its totient is φ = 15235320472.

The previous prime is 15235320469. The next prime is 15235320479. The reversal of 15235320473 is 37402353251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12357212569 + 2878107904 = 111163^2 + 53648^2 .

It is a cyclic number.

It is not a de Polignac number, because 15235320473 - 2² = 15235320469 is a prime.

It is a super-2 number, since 2×15235320473² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15235320479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7617660236 + 7617660237.

It is an arithmetic number, because the mean of its divisors is an integer number (7617660237).

Almost surely, 2^15235320473 is an apocalyptic number.

It is an amenable number.

15235320473 is a deficient number, since it is larger than the sum of its proper divisors (1).

15235320473 is an equidigital number, since it uses as much as digits as its factorization.

15235320473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 35.

The spelling of 15235320473 in words is "fifteen billion, two hundred thirty-five million, three hundred twenty thousand, four hundred seventy-three".