115278961630 has 96 divisors (see below), whose sum is σ = 269030743200. Its totient is φ = 35241357312.

The previous prime is 115278961627. The next prime is 115278961663. The reversal of 115278961630 is 36169872511.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205915 + ... + 522454.

It is an arithmetic number, because the mean of its divisors is an integer number (2802403575).

Almost surely, 2^115278961630 is an apocalyptic number.

115278961630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115278961630 is an abundant number, since it is smaller than the sum of its proper divisors (153751781570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115278961630 is a wasteful number, since it uses less digits than its factorization.

115278961630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728426 (or 728419 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 115278961630 in words is "one hundred fifteen billion, two hundred seventy-eight million, nine hundred sixty-one thousand, six hundred thirty".