6349806651 has 16 divisors (see below), whose sum is σ = 8650303488. Its totient is φ = 4141984800.

The previous prime is 6349806649. The next prime is 6349806667. The reversal of 6349806651 is 1566089436.

It is not a de Polignac number, because 6349806651 - 2¹ = 6349806649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6349806651.

It is not an unprimeable number, because it can be changed into a prime (6349886651) 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, 55881 + ... + 125786.

It is an arithmetic number, because the mean of its divisors is an integer number (540643968).

Almost surely, 2^6349806651 is an apocalyptic number.

6349806651 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6349806651 is a deficient number, since it is larger than the sum of its proper divisors (2300496837).

6349806651 is a wasteful number, since it uses less digits than its factorization.

6349806651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181922.

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 6349806651 is about 79685.6740637864. The cubic root of 6349806651 is about 1851.7691040143.

The spelling of 6349806651 in words is "six billion, three hundred forty-nine million, eight hundred six thousand, six hundred fifty-one".