26897084032 has 128 divisors (see below), whose sum is σ = 68077900800. Its totient is φ = 10297221120.

The previous prime is 26897084009. The next prime is 26897084033. The reversal of 26897084032 is 23048079862.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (26897084033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323844 + ... + 398332.

It is an arithmetic number, because the mean of its divisors is an integer number (531858600).

Almost surely, 2^26897084032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26897084032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34038950400).

26897084032 is an abundant number, since it is smaller than the sum of its proper divisors (41180816768).

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

26897084032 is a wasteful number, since it uses less digits than its factorization.

26897084032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74554 (or 74542 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 26897084032 in words is "twenty-six billion, eight hundred ninety-seven million, eighty-four thousand, thirty-two".