1366120802178 has 48 divisors (see below), whose sum is σ = 3269886422400. Its totient is φ = 408735793440.

The previous prime is 1366120802161. The next prime is 1366120802239. The reversal of 1366120802178 is 8712080216631.

1366120802178 is a `hidden beast` number, since 1 + 3 + 6 + 612 + 0 + 8 + 0 + 21 + 7 + 8 = 666.

It is a super-2 number, since 2×1366120802178² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43652713 + ... + 43683996.

It is an arithmetic number, because the mean of its divisors is an integer number (68122633800).

Almost surely, 2^{1366120802178} is an apocalyptic number.

1366120802178 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1366120802178 is an abundant number, since it is smaller than the sum of its proper divisors (1903765620222).

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

1366120802178 is a wasteful number, since it uses less digits than its factorization.

1366120802178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87336807 (or 87336804 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 1366120802178 in words is "one trillion, three hundred sixty-six billion, one hundred twenty million, eight hundred two thousand, one hundred seventy-eight".