1015323478457 has 2 divisors, whose sum is σ = 1015323478458. Its totient is φ = 1015323478456.

The previous prime is 1015323478307. The next prime is 1015323478469. The reversal of 1015323478457 is 7548743235101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973963714816 + 41359763641 = 986896^2 + 203371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015323478457 - 2⁸ = 1015323478201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1015323477457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507661739228 + 507661739229.

It is an arithmetic number, because the mean of its divisors is an integer number (507661739229).

Almost surely, 2^{1015323478457} is an apocalyptic number.

It is an amenable number.

1015323478457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015323478457 is an equidigital number, since it uses as much as digits as its factorization.

1015323478457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 1015323478457 in words is "one trillion, fifteen billion, three hundred twenty-three million, four hundred seventy-eight thousand, four hundred fifty-seven".