115605503977 has 2 divisors, whose sum is σ = 115605503978. Its totient is φ = 115605503976.

The previous prime is 115605503969. The next prime is 115605503989. The reversal of 115605503977 is 779305506511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107180283456 + 8425220521 = 327384^2 + 91789^2 .

It is a cyclic number.

It is not a de Polignac number, because 115605503977 - 2³ = 115605503969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115605503977.

It is not a weakly prime, because it can be changed into another prime (115605503077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57802751988 + 57802751989.

It is an arithmetic number, because the mean of its divisors is an integer number (57802751989).

Almost surely, 2^115605503977 is an apocalyptic number.

It is an amenable number.

115605503977 is a deficient number, since it is larger than the sum of its proper divisors (1).

115605503977 is an equidigital number, since it uses as much as digits as its factorization.

115605503977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 992250, while the sum is 49.

The spelling of 115605503977 in words is "one hundred fifteen billion, six hundred five million, five hundred three thousand, nine hundred seventy-seven".