27958897848 has 48 divisors (see below), whose sum is σ = 81309043080. Its totient is φ = 7988256192.

The previous prime is 27958897843. The next prime is 27958897913. The reversal of 27958897848 is 84879885972.

It is a super-2 number, since 2×27958897848² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27958897848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27958897843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11886111 + ... + 11888462.

Almost surely, 2^27958897848 is an apocalyptic number.

27958897848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27958897848 is an abundant number, since it is smaller than the sum of its proper divisors (53350145232).

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

27958897848 is a wasteful number, since it uses less digits than its factorization.

27958897848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23774596 (or 23774585 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 75.

The spelling of 27958897848 in words is "twenty-seven billion, nine hundred fifty-eight million, eight hundred ninety-seven thousand, eight hundred forty-eight".