27638553550 has 12 divisors (see below), whose sum is σ = 51407709696. Its totient is φ = 11055421400.

The previous prime is 27638553541. The next prime is 27638553563. The reversal of 27638553550 is 5535583672.

It is a super-3 number, since 3×27638553550³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27638553494 and 27638553503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276385486 + ... + 276385585.

It is an arithmetic number, because the mean of its divisors is an integer number (4283975808).

Almost surely, 2^27638553550 is an apocalyptic number.

27638553550 is a deficient number, since it is larger than the sum of its proper divisors (23769156146).

27638553550 is a wasteful number, since it uses less digits than its factorization.

27638553550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552771083 (or 552771078 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 49.

The spelling of 27638553550 in words is "twenty-seven billion, six hundred thirty-eight million, five hundred fifty-three thousand, five hundred fifty".