8542499771 has 8 divisors (see below), whose sum is σ = 9246316464. Its totient is φ = 7845354720.

The previous prime is 8542499747. The next prime is 8542499783. The reversal of 8542499771 is 1779942458.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8542499771 - 2¹⁴ = 8542483387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8542490771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665245 + ... + 1670366.

It is an arithmetic number, because the mean of its divisors is an integer number (1155789558).

Almost surely, 2^8542499771 is an apocalyptic number.

8542499771 is a deficient number, since it is larger than the sum of its proper divisors (703816693).

8542499771 is a wasteful number, since it uses less digits than its factorization.

8542499771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335821.

The product of its digits is 5080320, while the sum is 56.

The square root of 8542499771 is about 92425.6445527971. The cubic root of 8542499771 is about 2044.2232586731.

The spelling of 8542499771 in words is "eight billion, five hundred forty-two million, four hundred ninety-nine thousand, seven hundred seventy-one".