6256631878181 has 8 divisors (see below), whose sum is σ = 6283740232224. Its totient is φ = 6229562672080.

The previous prime is 6256631878177. The next prime is 6256631878183. The reversal of 6256631878181 is 1818781366526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6256631878181 - 2² = 6256631878177 is a prime.

It is a super-2 number, since 2×6256631878181² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6256631878183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9466631 + ... + 10105956.

It is an arithmetic number, because the mean of its divisors is an integer number (785467529028).

Almost surely, 2^{6256631878181} is an apocalyptic number.

It is an amenable number.

6256631878181 is a deficient number, since it is larger than the sum of its proper divisors (27108354043).

6256631878181 is a wasteful number, since it uses less digits than its factorization.

6256631878181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573971.

The product of its digits is 23224320, while the sum is 62.

The spelling of 6256631878181 in words is "six trillion, two hundred fifty-six billion, six hundred thirty-one million, eight hundred seventy-eight thousand, one hundred eighty-one".