15450419317 has 2 divisors, whose sum is σ = 15450419318. Its totient is φ = 15450419316.

The previous prime is 15450419287. The next prime is 15450419321. The reversal of 15450419317 is 71391405451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7900720996 + 7549698321 = 88886^2 + 86889^2 .

It is an emirp because it is prime and its reverse (71391405451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15450419317 - 2³¹ = 13302935669 is a prime.

It is a super-2 number, since 2×15450419317² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15450419317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15450419917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7725209658 + 7725209659.

It is an arithmetic number, because the mean of its divisors is an integer number (7725209659).

Almost surely, 2^15450419317 is an apocalyptic number.

It is an amenable number.

15450419317 is a deficient number, since it is larger than the sum of its proper divisors (1).

15450419317 is an equidigital number, since it uses as much as digits as its factorization.

15450419317 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 40.

The spelling of 15450419317 in words is "fifteen billion, four hundred fifty million, four hundred nineteen thousand, three hundred seventeen".