115519489973 has 2 divisors, whose sum is σ = 115519489974. Its totient is φ = 115519489972.

The previous prime is 115519489957. The next prime is 115519489993. The reversal of 115519489973 is 379984915511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71287932004 + 44231557969 = 266998^2 + 210313^2 .

It is a cyclic number.

It is not a de Polignac number, because 115519489973 - 2⁴ = 115519489957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115519489993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57759744986 + 57759744987.

It is an arithmetic number, because the mean of its divisors is an integer number (57759744987).

Almost surely, 2^115519489973 is an apocalyptic number.

It is an amenable number.

115519489973 is a deficient number, since it is larger than the sum of its proper divisors (1).

115519489973 is an equidigital number, since it uses as much as digits as its factorization.

115519489973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 62.

The spelling of 115519489973 in words is "one hundred fifteen billion, five hundred nineteen million, four hundred eighty-nine thousand, nine hundred seventy-three".