27499999999 has 8 divisors (see below), whose sum is σ = 29158665840. Its totient is φ = 25862463936.

The previous prime is 27499999993. The next prime is 27500000009. The reversal of 27499999999 is 99999999472.

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 27499999999 - 2²¹ = 27497902847 is a prime.

It is a Duffinian number.

27499999999 is a modest number, since divided by 999999 gives 27499 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27499999993) 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, 5279764 + ... + 5284969.

It is an arithmetic number, because the mean of its divisors is an integer number (3644833230).

Almost surely, 2^27499999999 is an apocalyptic number.

27499999999 is a deficient number, since it is larger than the sum of its proper divisors (1658665841).

27499999999 is a wasteful number, since it uses less digits than its factorization.

27499999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10564889.

The product of its digits is 2410616376, while the sum is 85.

The spelling of 27499999999 in words is "twenty-seven billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".