6542664454 has 16 divisors (see below), whose sum is σ = 9887825808. Its totient is φ = 3246770592.

The previous prime is 6542664449. The next prime is 6542664463. The reversal of 6542664454 is 4544662456.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273312 + ... + 296284.

It is an arithmetic number, because the mean of its divisors is an integer number (617989113).

Almost surely, 2^6542664454 is an apocalyptic number.

6542664454 is a deficient number, since it is larger than the sum of its proper divisors (3345161354).

6542664454 is a wasteful number, since it uses less digits than its factorization.

6542664454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24039.

The product of its digits is 2764800, while the sum is 46.

The square root of 6542664454 is about 80886.7384309690. The cubic root of 6542664454 is about 1870.3298963290.

The spelling of 6542664454 in words is "six billion, five hundred forty-two million, six hundred sixty-four thousand, four hundred fifty-four".