13177424856 has 64 divisors (see below), whose sum is σ = 33612163200. Its totient is φ = 4303819008.

The previous prime is 13177424833. The next prime is 13177424867. The reversal of 13177424856 is 65842477131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419556 + ... + 449868.

It is an arithmetic number, because the mean of its divisors is an integer number (525190050).

Almost surely, 2^13177424856 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 13177424856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16806081600).

13177424856 is an abundant number, since it is smaller than the sum of its proper divisors (20434738344).

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

13177424856 is a wasteful number, since it uses less digits than its factorization.

13177424856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30688 (or 30684 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The spelling of 13177424856 in words is "thirteen billion, one hundred seventy-seven million, four hundred twenty-four thousand, eight hundred fifty-six".