27798006519 has 32 divisors (see below), whose sum is σ = 42295780800. Its totient is φ = 18033246720.

The previous prime is 27798006493. The next prime is 27798006541. The reversal of 27798006519 is 91560089772.

It is not a de Polignac number, because 27798006519 - 2⁷ = 27798006391 is a prime.

It is a super-2 number, since 2×27798006519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27798006319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398347 + ... + 462899.

It is an arithmetic number, because the mean of its divisors is an integer number (1321743150).

Almost surely, 2^27798006519 is an apocalyptic number.

27798006519 is a deficient number, since it is larger than the sum of its proper divisors (14497774281).

27798006519 is a wasteful number, since it uses less digits than its factorization.

27798006519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64992 (or 64986 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The spelling of 27798006519 in words is "twenty-seven billion, seven hundred ninety-eight million, six thousand, five hundred nineteen".