115481511778 has 16 divisors (see below), whose sum is σ = 175064400576. Its totient is φ = 57127739760.

The previous prime is 115481511763. The next prime is 115481511793. The reversal of 115481511778 is 877115184511.

115481511778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (115481511763) and next prime (115481511793).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31288 + ... + 481603.

It is an arithmetic number, because the mean of its divisors is an integer number (10941525036).

Almost surely, 2^115481511778 is an apocalyptic number.

115481511778 is a deficient number, since it is larger than the sum of its proper divisors (59582888798).

115481511778 is a wasteful number, since it uses less digits than its factorization.

115481511778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514089.

The product of its digits is 313600, while the sum is 49.

The spelling of 115481511778 in words is "one hundred fifteen billion, four hundred eighty-one million, five hundred eleven thousand, seven hundred seventy-eight".