26689487401540 has 48 divisors (see below), whose sum is σ = 56177123184000. Its totient is φ = 10651192987392.

The previous prime is 26689487401519. The next prime is 26689487401559. The reversal of 26689487401540 is 4510478498662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57668176 + ... + 58129144.

It is an arithmetic number, because the mean of its divisors is an integer number (1170356733000).

Almost surely, 2^{26689487401540} is an apocalyptic number.

26689487401540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26689487401540 is an abundant number, since it is smaller than the sum of its proper divisors (29487635782460).

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

26689487401540 is a wasteful number, since it uses less digits than its factorization.

26689487401540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467644 (or 467642 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 64.

The spelling of 26689487401540 in words is "twenty-six trillion, six hundred eighty-nine billion, four hundred eighty-seven million, four hundred one thousand, five hundred forty".