1515430425643 has 2 divisors, whose sum is σ = 1515430425644. Its totient is φ = 1515430425642.

The previous prime is 1515430425563. The next prime is 1515430425703. The reversal of 1515430425643 is 3465240345151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1515430425643 - 2²⁹ = 1514893554731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1515430425643.

It is not a weakly prime, because it can be changed into another prime (1515430465643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 757715212821 + 757715212822.

It is an arithmetic number, because the mean of its divisors is an integer number (757715212822).

Almost surely, 2^{1515430425643} is an apocalyptic number.

1515430425643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1515430425643 is an equidigital number, since it uses as much as digits as its factorization.

1515430425643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 1515430425643 in words is "one trillion, five hundred fifteen billion, four hundred thirty million, four hundred twenty-five thousand, six hundred forty-three".