1516253618923 has 2 divisors, whose sum is σ = 1516253618924. Its totient is φ = 1516253618922.

The previous prime is 1516253618791. The next prime is 1516253618941. The reversal of 1516253618923 is 3298163526151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1516253618923 - 2¹⁷ = 1516253487851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1516253618723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758126809461 + 758126809462.

It is an arithmetic number, because the mean of its divisors is an integer number (758126809462).

Almost surely, 2^{1516253618923} is an apocalyptic number.

1516253618923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516253618923 is an equidigital number, since it uses as much as digits as its factorization.

1516253618923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 52.

The spelling of 1516253618923 in words is "one trillion, five hundred sixteen billion, two hundred fifty-three million, six hundred eighteen thousand, nine hundred twenty-three".