27863798658 has 16 divisors (see below), whose sum is σ = 55730288736. Its totient is φ = 9287484320.

The previous prime is 27863798653. The next prime is 27863798671. The reversal of 27863798658 is 85689736872.

It is a junction number, because it is equal to n+sod(n) for n = 27863798592 and 27863798601.

It is not an unprimeable number, because it can be changed into a prime (27863798653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37885 + ... + 239087.

It is an arithmetic number, because the mean of its divisors is an integer number (3483143046).

Almost surely, 2^27863798658 is an apocalyptic number.

27863798658 is an abundant number, since it is smaller than the sum of its proper divisors (27866490078).

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

27863798658 is a wasteful number, since it uses less digits than its factorization.

27863798658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224289.

The product of its digits is 243855360, while the sum is 69.

The spelling of 27863798658 in words is "twenty-seven billion, eight hundred sixty-three million, seven hundred ninety-eight thousand, six hundred fifty-eight".