6445154506 has 32 divisors (see below), whose sum is σ = 11093322240. Its totient is φ = 2751116400.

The previous prime is 6445154497. The next prime is 6445154539. The reversal of 6445154506 is 6054515446.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5907021 + ... + 5908111.

It is an arithmetic number, because the mean of its divisors is an integer number (346666320).

Almost surely, 2^6445154506 is an apocalyptic number.

6445154506 is a deficient number, since it is larger than the sum of its proper divisors (4648167734).

6445154506 is a wasteful number, since it uses less digits than its factorization.

6445154506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410.

The product of its (nonzero) digits is 288000, while the sum is 40.

The square root of 6445154506 is about 80281.7196253294. The cubic root of 6445154506 is about 1860.9917347751.

The spelling of 6445154506 in words is "six billion, four hundred forty-five million, one hundred fifty-four thousand, five hundred six".