27934064658 has 24 divisors (see below), whose sum is σ = 64084031388. Its totient is φ = 8763628032.

The previous prime is 27934064621. The next prime is 27934064659. The reversal of 27934064658 is 85646043972.

It can be written as a sum of positive squares in 2 ways, for example, as 21092624289 + 6841440369 = 145233^2 + 82713^2 .

It is not an unprimeable number, because it can be changed into a prime (27934064659) 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, 45643591 + ... + 45644202.

Almost surely, 2^27934064658 is an apocalyptic number.

27934064658 is an abundant number, since it is smaller than the sum of its proper divisors (36149966730).

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

27934064658 is a wasteful number, since it uses less digits than its factorization.

27934064658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91287818 (or 91287815 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 27934064658 in words is "twenty-seven billion, nine hundred thirty-four million, sixty-four thousand, six hundred fifty-eight".