26298694890 has 96 divisors (see below), whose sum is σ = 73700565120. Its totient is φ = 6467879808.

The previous prime is 26298694883. The next prime is 26298694897. The reversal of 26298694890 is 9849689262.

26298694890 is a `hidden beast` number, since 2 + 6 + 2 + 98 + 69 + 489 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (26298694883) and next prime (26298694897).

It is a super-2 number, since 2×26298694890² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26298694897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1421721 + ... + 1440099.

It is an arithmetic number, because the mean of its divisors is an integer number (767714220).

Almost surely, 2^26298694890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26298694890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36850282560).

26298694890 is an abundant number, since it is smaller than the sum of its proper divisors (47401870230).

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

26298694890 is a wasteful number, since it uses less digits than its factorization.

26298694890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19628 (or 19625 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 26298694890 in words is "twenty-six billion, two hundred ninety-eight million, six hundred ninety-four thousand, eight hundred ninety".