26580451408 has 30 divisors (see below), whose sum is σ = 59907728346. Its totient is φ = 11391621696.

The previous prime is 26580451399. The next prime is 26580451421. The reversal of 26580451408 is 80415408562.

It can be written as a sum of positive squares in only one way, i.e., 23320954944 + 3259496464 = 152712^2 + 57092^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16951035 + ... + 16952602.

Almost surely, 2^26580451408 is an apocalyptic number.

26580451408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26580451408 is an abundant number, since it is smaller than the sum of its proper divisors (33327276938).

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

26580451408 is a wasteful number, since it uses less digits than its factorization.

26580451408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33903659 (or 33903646 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 43.

The spelling of 26580451408 in words is "twenty-six billion, five hundred eighty million, four hundred fifty-one thousand, four hundred eight".