27500027550 has 48 divisors (see below), whose sum is σ = 68737124352. Its totient is φ = 7275592800.

The previous prime is 27500027483. The next prime is 27500027563. The reversal of 27500027550 is 5572000572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 702736 + ... + 740835.

It is an arithmetic number, because the mean of its divisors is an integer number (1432023424).

Almost surely, 2^27500027550 is an apocalyptic number.

27500027550 is an abundant number, since it is smaller than the sum of its proper divisors (41237096802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27500027550 is a wasteful number, since it uses less digits than its factorization.

27500027550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443713 (or 1443708 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 33.

The spelling of 27500027550 in words is "twenty-seven billion, five hundred million, twenty-seven thousand, five hundred fifty".