26178276864 has 160 divisors (see below), whose sum is σ = 72199378944. Its totient is φ = 8420106240.

The previous prime is 26178276841. The next prime is 26178276899. The reversal of 26178276864 is 46867287162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23950302 + ... + 23951394.

Almost surely, 2^26178276864 is an apocalyptic number.

26178276864 is a gapful number since it is divisible by the number (24) 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 26178276864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36099689472).

26178276864 is an abundant number, since it is smaller than the sum of its proper divisors (46021102080).

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

26178276864 is a wasteful number, since it uses less digits than its factorization.

26178276864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1632 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 57.

The spelling of 26178276864 in words is "twenty-six billion, one hundred seventy-eight million, two hundred seventy-six thousand, eight hundred sixty-four".