133612860861378 has 12 divisors (see below), whose sum is σ = 289494531866358. Its totient is φ = 44537620287120.

The previous prime is 133612860861377. The next prime is 133612860861427. The reversal of 133612860861378 is 873168068216331.

It is a happy number.

133612860861378 is a `hidden beast` number, since 1 + 3 + 3 + 6 + 1 + 2 + 8 + 6 + 0 + 8 + 613 + 7 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 98105122468809 + 35507738392569 = 9904803^2 + 5958837^2 .

It is not an unprimeable number, because it can be changed into a prime (133612860861377) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3711468357243 + ... + 3711468357278.

Almost surely, 2^{133612860861378} is an apocalyptic number.

133612860861378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

133612860861378 is an abundant number, since it is smaller than the sum of its proper divisors (155881671004980).

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

133612860861378 is a wasteful number, since it uses less digits than its factorization.

133612860861378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7422936714529 (or 7422936714526 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 133612860861378 in words is "one hundred thirty-three trillion, six hundred twelve billion, eight hundred sixty million, eight hundred sixty-one thousand, three hundred seventy-eight".