27655367540 has 48 divisors (see below), whose sum is σ = 61474593600. Its totient is φ = 10421356032.

The previous prime is 27655367539. The next prime is 27655367543. The reversal of 27655367540 is 4576355672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27655367543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135269 + ... + 271308.

It is an arithmetic number, because the mean of its divisors is an integer number (1280720700).

Almost surely, 2^27655367540 is an apocalyptic number.

27655367540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27655367540 is an abundant number, since it is smaller than the sum of its proper divisors (33819226060).

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

27655367540 is a wasteful number, since it uses less digits than its factorization.

27655367540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406784 (or 406782 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 50.

The spelling of 27655367540 in words is "twenty-seven billion, six hundred fifty-five million, three hundred sixty-seven thousand, five hundred forty".