133868686830 has 16 divisors (see below), whose sum is σ = 321284848464. Its totient is φ = 35698316480.

The previous prime is 133868686817. The next prime is 133868686841. The reversal of 133868686830 is 38686868331.

It is a happy number.

It is a congruent number.

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, 2231144751 + ... + 2231144810.

It is an arithmetic number, because the mean of its divisors is an integer number (20080303029).

Almost surely, 2^133868686830 is an apocalyptic number.

133868686830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133868686830 is an abundant number, since it is smaller than the sum of its proper divisors (187416161634).

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

133868686830 is a wasteful number, since it uses less digits than its factorization.

133868686830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462289571.

The product of its (nonzero) digits is 23887872, while the sum is 60.

It can be divided in two parts, 1338686 and 86830, that added together give a triangular number (1425516 = T₁₆₈₈).

The spelling of 133868686830 in words is "one hundred thirty-three billion, eight hundred sixty-eight million, six hundred eighty-six thousand, eight hundred thirty".