2015323521473 has 2 divisors, whose sum is σ = 2015323521474. Its totient is φ = 2015323521472.

The previous prime is 2015323521461. The next prime is 2015323521493. The reversal of 2015323521473 is 3741253235102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1787309631409 + 228013890064 = 1336903^2 + 477508^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015323521473 - 2¹⁸ = 2015323259329 is a prime.

It is not a weakly prime, because it can be changed into another prime (2015323521493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007661760736 + 1007661760737.

It is an arithmetic number, because the mean of its divisors is an integer number (1007661760737).

Almost surely, 2^{2015323521473} is an apocalyptic number.

It is an amenable number.

2015323521473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015323521473 is an equidigital number, since it uses as much as digits as its factorization.

2015323521473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 38.

Adding to 2015323521473 its reverse (3741253235102), we get a palindrome (5756576756575).

The spelling of 2015323521473 in words is "two trillion, fifteen billion, three hundred twenty-three million, five hundred twenty-one thousand, four hundred seventy-three".