115511712771 has 48 divisors (see below), whose sum is σ = 195750760704. Its totient is φ = 59282451072.

The previous prime is 115511712733. The next prime is 115511712793. The reversal of 115511712771 is 177217115511.

It is not a de Polignac number, because 115511712771 - 2¹⁰ = 115511711747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (115511712731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 308521 + ... + 571146.

It is an arithmetic number, because the mean of its divisors is an integer number (4078140848).

Almost surely, 2^115511712771 is an apocalyptic number.

115511712771 is a deficient number, since it is larger than the sum of its proper divisors (80239047933).

115511712771 is a wasteful number, since it uses less digits than its factorization.

115511712771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879740 (or 879727 counting only the distinct ones).

The product of its digits is 17150, while the sum is 39.

The spelling of 115511712771 in words is "one hundred fifteen billion, five hundred eleven million, seven hundred twelve thousand, seven hundred seventy-one".