26478617088 has 320 divisors, whose sum is σ = 88670039040. Its totient is φ = 6821068800.

The previous prime is 26478617071. The next prime is 26478617119. The reversal of 26478617088 is 88071687462.

It is a happy number.

It is a super-2 number, since 2×26478617088² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15492778 + ... + 15494486.

It is an arithmetic number, because the mean of its divisors is an integer number (277093872).

Almost surely, 2^26478617088 is an apocalyptic number.

26478617088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26478617088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44335019520).

26478617088 is an abundant number, since it is smaller than the sum of its proper divisors (62191421952).

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

26478617088 is a wasteful number, since it uses less digits than its factorization.

26478617088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 26478617088 in words is "twenty-six billion, four hundred seventy-eight million, six hundred seventeen thousand, eighty-eight".