115745777253 has 28 divisors (see below), whose sum is σ = 174704136300. Its totient is φ = 76645901376.

The previous prime is 115745777249. The next prime is 115745777263. The reversal of 115745777253 is 352777547511.

It is a happy number.

115745777253 is a `hidden beast` number, since 1 + 15 + 7 + 4 + 577 + 7 + 2 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7436992644 + 108308784609 = 86238^2 + 329103^2 .

It is not a de Polignac number, because 115745777253 - 2² = 115745777249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115745777253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115745777233) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 424176 + ... + 641417.

Almost surely, 2^115745777253 is an apocalyptic number.

It is an amenable number.

115745777253 is a deficient number, since it is larger than the sum of its proper divisors (58958359047).

115745777253 is an equidigital number, since it uses as much as digits as its factorization.

115745777253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065760 (or 1065745 counting only the distinct ones).

The product of its digits is 7203000, while the sum is 54.

The spelling of 115745777253 in words is "one hundred fifteen billion, seven hundred forty-five million, seven hundred seventy-seven thousand, two hundred fifty-three".