26478564405090 has 48 divisors (see below), whose sum is σ = 73923828792192. Its totient is φ = 6052243292256.

The previous prime is 26478564405067. The next prime is 26478564405121. The reversal of 26478564405090 is 9050446587462.

It is a happy number.

It is a super-2 number, since 2×26478564405090² (a number of 28 digits) contains 22 as substring.

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, 9006312954 + ... + 9006315893.

It is an arithmetic number, because the mean of its divisors is an integer number (1540079766504).

Almost surely, 2^{26478564405090} is an apocalyptic number.

26478564405090 is an abundant number, since it is smaller than the sum of its proper divisors (47445264387102).

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

26478564405090 is a wasteful number, since it uses less digits than its factorization.

26478564405090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18012628871 (or 18012628864 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 60.

The spelling of 26478564405090 in words is "twenty-six trillion, four hundred seventy-eight billion, five hundred sixty-four million, four hundred five thousand, ninety".