6481506454 has 4 divisors (see below), whose sum is σ = 9722259684. Its totient is φ = 3240753226.

The previous prime is 6481506403. The next prime is 6481506497. The reversal of 6481506454 is 4546051846.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6481506454.

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, 1620376612 + ... + 1620376615.

It is an arithmetic number, because the mean of its divisors is an integer number (2430564921).

Almost surely, 2^6481506454 is an apocalyptic number.

6481506454 is a deficient number, since it is larger than the sum of its proper divisors (3240753230).

6481506454 is a wasteful number, since it uses less digits than its factorization.

6481506454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240753229.

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 6481506454 is about 80507.8036838666. The cubic root of 6481506454 is about 1864.4839646880.

The spelling of 6481506454 in words is "six billion, four hundred eighty-one million, five hundred six thousand, four hundred fifty-four".