6446201651 has 4 divisors (see below), whose sum is σ = 6726471312. Its totient is φ = 6165931992.

The previous prime is 6446201633. The next prime is 6446201689. The reversal of 6446201651 is 1561026446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6446201651 - 2¹⁰ = 6446200627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6446201551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140134796 + ... + 140134841.

It is an arithmetic number, because the mean of its divisors is an integer number (1681617828).

Almost surely, 2^6446201651 is an apocalyptic number.

6446201651 is a deficient number, since it is larger than the sum of its proper divisors (280269661).

6446201651 is a wasteful number, since it uses less digits than its factorization.

6446201651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280269660.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 6446201651 is about 80288.2410506047. The cubic root of 6446201651 is about 1861.0925144983.

The spelling of 6446201651 in words is "six billion, four hundred forty-six million, two hundred one thousand, six hundred fifty-one".