26781670080 has 168 divisors, whose sum is σ = 100492249104. Its totient is φ = 6492518400.

The previous prime is 26781670079. The next prime is 26781670093. The reversal of 26781670080 is 8007618762.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391011 + ... + 454370.

Almost surely, 2^26781670080 is an apocalyptic number.

26781670080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26781670080 is an abundant number, since it is smaller than the sum of its proper divisors (73710579024).

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

26781670080 is a wasteful number, since it uses less digits than its factorization.

26781670080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845415 (or 845402 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 26781670080 in words is "twenty-six billion, seven hundred eighty-one million, six hundred seventy thousand, eighty".