27405349099 has 4 divisors (see below), whose sum is σ = 27406921464. Its totient is φ = 27403776736.

The previous prime is 27405349063. The next prime is 27405349117. The reversal of 27405349099 is 99094350472.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27405349099 - 2⁹ = 27405348587 is a prime.

It is a super-2 number, since 2×27405349099² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27405349009) 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 3 ways as a sum of consecutive naturals, for example, 759742 + ... + 794995.

It is an arithmetic number, because the mean of its divisors is an integer number (6851730366).

Almost surely, 2^27405349099 is an apocalyptic number.

27405349099 is a deficient number, since it is larger than the sum of its proper divisors (1572365).

27405349099 is a wasteful number, since it uses less digits than its factorization.

27405349099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572364.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 27405349099 in words is "twenty-seven billion, four hundred five million, three hundred forty-nine thousand, ninety-nine".