6480641854 has 4 divisors (see below), whose sum is σ = 9720962784. Its totient is φ = 3240320926.

The previous prime is 6480641819. The next prime is 6480641903. The reversal of 6480641854 is 4581460846.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620160462 + ... + 1620160465.

It is an arithmetic number, because the mean of its divisors is an integer number (2430240696).

Almost surely, 2^6480641854 is an apocalyptic number.

6480641854 is a deficient number, since it is larger than the sum of its proper divisors (3240320930).

6480641854 is a wasteful number, since it uses less digits than its factorization.

6480641854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240320929.

The product of its (nonzero) digits is 737280, while the sum is 46.

The square root of 6480641854 is about 80502.4338389840. The cubic root of 6480641854 is about 1864.4010567750.

The spelling of 6480641854 in words is "six billion, four hundred eighty million, six hundred forty-one thousand, eight hundred fifty-four".