4551621117 has 8 divisors (see below), whose sum is σ = 6070153824. Its totient is φ = 3033751248.

The previous prime is 4551621083. The next prime is 4551621121. The reversal of 4551621117 is 7111261554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4551621117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4551621187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149458 + ... + 177315.

It is an arithmetic number, because the mean of its divisors is an integer number (758769228).

Almost surely, 2^4551621117 is an apocalyptic number.

It is an amenable number.

4551621117 is a deficient number, since it is larger than the sum of its proper divisors (1518532707).

4551621117 is a wasteful number, since it uses less digits than its factorization.

4551621117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331419.

The product of its digits is 8400, while the sum is 33.

The square root of 4551621117 is about 67465.7032646959. The cubic root of 4551621117 is about 1657.2525701422.

The spelling of 4551621117 in words is "four billion, five hundred fifty-one million, six hundred twenty-one thousand, one hundred seventeen".