6135404267281 has 8 divisors (see below), whose sum is σ = 6347479815720. Its totient is φ = 5923362711168.

The previous prime is 6135404267249. The next prime is 6135404267299. The reversal of 6135404267281 is 1827624045316.

It can be written as a sum of positive squares in 4 ways, for example, as 319469126656 + 5815935140625 = 565216^2 + 2411625^2 .

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

It is not a de Polignac number, because 6135404267281 - 2⁵ = 6135404267249 is a prime.

It is a super-4 number, since 4×6135404267281⁴ (a number of 52 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6135404267221) 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, 8130586 + ... + 8853091.

It is an arithmetic number, because the mean of its divisors is an integer number (793434976965).

Almost surely, 2^{6135404267281} is an apocalyptic number.

It is an amenable number.

6135404267281 is a deficient number, since it is larger than the sum of its proper divisors (212075548439).

6135404267281 is a wasteful number, since it uses less digits than its factorization.

6135404267281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16996163.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 6135404267281 in words is "six trillion, one hundred thirty-five billion, four hundred four million, two hundred sixty-seven thousand, two hundred eighty-one".