1391341806855 has 192 divisors, whose sum is σ = 3257438865408. Its totient is φ = 530542586880.

The previous prime is 1391341806809. The next prime is 1391341806863. The reversal of 1391341806855 is 5586081431931.

1391341806855 is a `hidden beast` number, since 139 + 13 + 418 + 0 + 6 + 85 + 5 = 666.

It is not a de Polignac number, because 1391341806855 - 2⁶ = 1391341806791 is a prime.

It is a super-2 number, since 2×1391341806855² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7430037 + ... + 7614993.

It is an arithmetic number, because the mean of its divisors is an integer number (16965827424).

Almost surely, 2^{1391341806855} is an apocalyptic number.

1391341806855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1391341806855 is an abundant number, since it is smaller than the sum of its proper divisors (1866097058553).

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

1391341806855 is a wasteful number, since it uses less digits than its factorization.

1391341806855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185166 (or 185163 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 1391341806855 in words is "one trillion, three hundred ninety-one billion, three hundred forty-one million, eight hundred six thousand, eight hundred fifty-five".