27247098978 has 80 divisors (see below), whose sum is σ = 66653769600. Its totient is φ = 8250530400.

The previous prime is 27247098943. The next prime is 27247099013. The reversal of 27247098978 is 87989074272.

27247098978 is a `hidden beast` number, since 2 + 7 + 2 + 470 + 98 + 9 + 78 = 666.

27247098978 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (27247098943) and next prime (27247099013).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2755383 + ... + 2765253.

It is an arithmetic number, because the mean of its divisors is an integer number (833172120).

Almost surely, 2^27247098978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27247098978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33326884800).

27247098978 is an abundant number, since it is smaller than the sum of its proper divisors (39406670622).

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

27247098978 is a wasteful number, since it uses less digits than its factorization.

27247098978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11445 (or 11436 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 27247098978 in words is "twenty-seven billion, two hundred forty-seven million, ninety-eight thousand, nine hundred seventy-eight".