6361009281 has 24 divisors (see below), whose sum is σ = 10236680064. Its totient is φ = 3773129760.

The previous prime is 6361009271. The next prime is 6361009309. The reversal of 6361009281 is 1829001636.

6361009281 is a `hidden beast` number, since 636 + 10 + 0 + 9 + 2 + 8 + 1 = 666.

It is not a de Polignac number, because 6361009281 - 2¹⁸ = 6360747137 is a prime.

It is a super-2 number, since 2×6361009281² = 80924878145936273922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6361009211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 678886 + ... + 688191.

It is an arithmetic number, because the mean of its divisors is an integer number (426528336).

Almost surely, 2^6361009281 is an apocalyptic number.

It is an amenable number.

6361009281 is a deficient number, since it is larger than the sum of its proper divisors (3875670783).

6361009281 is a wasteful number, since it uses less digits than its factorization.

6361009281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367141 (or 1367138 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6361009281 is about 79755.9357101401. The cubic root of 6361009281 is about 1852.8574571782.

The spelling of 6361009281 in words is "six billion, three hundred sixty-one million, nine thousand, two hundred eighty-one".