6480641651 has 16 divisors (see below), whose sum is σ = 7123286016. Its totient is φ = 5847060000.

The previous prime is 6480641641. The next prime is 6480641663. The reversal of 6480641651 is 1561460846.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6480641651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6480641599 and 6480641608.

It is not an unprimeable number, because it can be changed into a prime (6480641641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965216 + ... + 971906.

It is an arithmetic number, because the mean of its divisors is an integer number (445205376).

Almost surely, 2^6480641651 is an apocalyptic number.

6480641651 is a deficient number, since it is larger than the sum of its proper divisors (642644365).

6480641651 is a wasteful number, since it uses less digits than its factorization.

6480641651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7354.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 6480641651 is about 80502.4325781526. The cubic root of 6480641651 is about 1864.4010373081.

The spelling of 6480641651 in words is "six billion, four hundred eighty million, six hundred forty-one thousand, six hundred fifty-one".