115880861566 has 32 divisors (see below), whose sum is σ = 186046139520. Its totient is φ = 53971077600.

The previous prime is 115880861531. The next prime is 115880861611. The reversal of 115880861566 is 665168088511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335321 + ... + 1419451.

It is an arithmetic number, because the mean of its divisors is an integer number (5813941860).

Almost surely, 2^115880861566 is an apocalyptic number.

115880861566 is a deficient number, since it is larger than the sum of its proper divisors (70165277954).

115880861566 is a wasteful number, since it uses less digits than its factorization.

115880861566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84760.

The product of its (nonzero) digits is 2764800, while the sum is 55.

The spelling of 115880861566 in words is "one hundred fifteen billion, eight hundred eighty million, eight hundred sixty-one thousand, five hundred sixty-six".