2015402945723 has 2 divisors, whose sum is σ = 2015402945724. Its totient is φ = 2015402945722.

The previous prime is 2015402945707. The next prime is 2015402945767. The reversal of 2015402945723 is 3275492045102.

It is an a-pointer prime, because the next prime (2015402945767) can be obtained adding 2015402945723 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2015402945723 - 2⁴ = 2015402945707 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2015402945623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007701472861 + 1007701472862.

It is an arithmetic number, because the mean of its divisors is an integer number (1007701472862).

Almost surely, 2^{2015402945723} is an apocalyptic number.

2015402945723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015402945723 is an equidigital number, since it uses as much as digits as its factorization.

2015402945723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 2015402945723 in words is "two trillion, fifteen billion, four hundred two million, nine hundred forty-five thousand, seven hundred twenty-three".