6635347851 has 16 divisors (see below), whose sum is σ = 9715339008. Its totient is φ = 3994788000.

The previous prime is 6635347841. The next prime is 6635347853. The reversal of 6635347851 is 1587435366.

It is not a de Polignac number, because 6635347851 - 2⁵ = 6635347819 is a prime.

It is a super-2 number, since 2×6635347851² = 88055682207540636402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6635347851.

It is not an unprimeable number, because it can be changed into a prime (6635347853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660816 + ... + 670781.

It is an arithmetic number, because the mean of its divisors is an integer number (607208688).

Almost surely, 2^6635347851 is an apocalyptic number.

6635347851 is a deficient number, since it is larger than the sum of its proper divisors (3079991157).

6635347851 is a wasteful number, since it uses less digits than its factorization.

6635347851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331762.

The product of its digits is 1814400, while the sum is 48.

The square root of 6635347851 is about 81457.6445215549. The cubic root of 6635347851 is about 1879.1202171250.

The spelling of 6635347851 in words is "six billion, six hundred thirty-five million, three hundred forty-seven thousand, eight hundred fifty-one".