27406625399 has 4 divisors (see below), whose sum is σ = 27408822264. Its totient is φ = 27404428536.

The previous prime is 27406625377. The next prime is 27406625417. The reversal of 27406625399 is 99352660472.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27406625399 is a prime.

It is a super-2 number, since 2×27406625399² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27406625399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27406625369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079612 + ... + 1104705.

It is an arithmetic number, because the mean of its divisors is an integer number (6852205566).

Almost surely, 2^27406625399 is an apocalyptic number.

27406625399 is a deficient number, since it is larger than the sum of its proper divisors (2196865).

27406625399 is a wasteful number, since it uses less digits than its factorization.

27406625399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196864.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 27406625399 in words is "twenty-seven billion, four hundred six million, six hundred twenty-five thousand, three hundred ninety-nine".