5481649985 has 8 divisors (see below), whose sum is σ = 7517691456. Its totient is φ = 3758845680.

The previous prime is 5481649969. The next prime is 5481650029. The reversal of 5481649985 is 5899461845.

It is a happy number.

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

It is not a de Polignac number, because 5481649985 - 2⁴ = 5481649969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78309251 + ... + 78309320.

It is an arithmetic number, because the mean of its divisors is an integer number (939711432).

Almost surely, 2^5481649985 is an apocalyptic number.

It is an amenable number.

5481649985 is a deficient number, since it is larger than the sum of its proper divisors (2036041471).

5481649985 is a wasteful number, since it uses less digits than its factorization.

5481649985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156618583.

The product of its digits is 12441600, while the sum is 59.

The square root of 5481649985 is about 74038.1657322762. The cubic root of 5481649985 is about 1763.2088911728.

The spelling of 5481649985 in words is "five billion, four hundred eighty-one million, six hundred forty-nine thousand, nine hundred eighty-five".