6281131656 has 64 divisors (see below), whose sum is σ = 15834254400. Its totient is φ = 2076242688.

The previous prime is 6281131643. The next prime is 6281131669. The reversal of 6281131656 is 6561311826.

It is an interprime number because it is at equal distance from previous prime (6281131643) and next prime (6281131669).

It is a super-3 number, since 3×6281131656³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 2331046 + ... + 2333738.

It is an arithmetic number, because the mean of its divisors is an integer number (247410225).

Almost surely, 2^6281131656 is an apocalyptic number.

It is an amenable number.

6281131656 is an abundant number, since it is smaller than the sum of its proper divisors (9553122744).

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

6281131656 is a wasteful number, since it uses less digits than its factorization.

6281131656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478 (or 3474 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 6281131656 is about 79253.5908082404. The cubic root of 6281131656 is about 1845.0690853311.

The spelling of 6281131656 in words is "six billion, two hundred eighty-one million, one hundred thirty-one thousand, six hundred fifty-six".