27980067500638 has 48 divisors (see below), whose sum is σ = 46897777537632. Its totient is φ = 12507293937600.

The previous prime is 27980067500617. The next prime is 27980067500653. The reversal of 27980067500638 is 83600576008972.

It is a super-2 number, since 2×27980067500638² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77127631 + ... + 77489557.

It is an arithmetic number, because the mean of its divisors is an integer number (977037032034).

Almost surely, 2^{27980067500638} is an apocalyptic number.

27980067500638 is a deficient number, since it is larger than the sum of its proper divisors (18917710036994).

27980067500638 is a wasteful number, since it uses less digits than its factorization.

27980067500638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367249 (or 367238 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 27980067500638 in words is "twenty-seven trillion, nine hundred eighty billion, sixty-seven million, five hundred thousand, six hundred thirty-eight".