27689240355 has 16 divisors (see below), whose sum is σ = 50631753984. Its totient is φ = 12657938400.

The previous prime is 27689240347. The next prime is 27689240363. The reversal of 27689240355 is 55304298672.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27689240347) and next prime (27689240363).

It is not a de Polignac number, because 27689240355 - 2³ = 27689240347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27689240298 and 27689240307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131853421 + ... + 131853630.

It is an arithmetic number, because the mean of its divisors is an integer number (3164484624).

Almost surely, 2^27689240355 is an apocalyptic number.

27689240355 is a deficient number, since it is larger than the sum of its proper divisors (22942513629).

27689240355 is a wasteful number, since it uses less digits than its factorization.

27689240355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263707066.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 27689240355 in words is "twenty-seven billion, six hundred eighty-nine million, two hundred forty thousand, three hundred fifty-five".