13177861272856 has 192 divisors, whose sum is σ = 30655525187520. Its totient is φ = 5276668723200.

The previous prime is 13177861272847. The next prime is 13177861272869. The reversal of 13177861272856 is 65827216877131.

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 47 ways as a sum of consecutive naturals, for example, 1888754040 + ... + 1888761016.

It is an arithmetic number, because the mean of its divisors is an integer number (159664193685).

Almost surely, 2^{13177861272856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13177861272856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15327762593760).

13177861272856 is an abundant number, since it is smaller than the sum of its proper divisors (17477663914664).

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

13177861272856 is a wasteful number, since it uses less digits than its factorization.

13177861272856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9042 (or 9031 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 64.

The spelling of 13177861272856 in words is "thirteen trillion, one hundred seventy-seven billion, eight hundred sixty-one million, two hundred seventy-two thousand, eight hundred fifty-six".