26478885290 has 256 divisors, whose sum is σ = 61312204800. Its totient is φ = 8094643200.

The previous prime is 26478885289. The next prime is 26478885373. The reversal of 26478885290 is 9258887462.

It is a super-2 number, since 2×26478885290² (a number of 22 digits) contains 22 as substring.

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 127 ways as a sum of consecutive naturals, for example, 55279271 + ... + 55279749.

It is an arithmetic number, because the mean of its divisors is an integer number (239500800).

Almost surely, 2^26478885290 is an apocalyptic number.

26478885290 is an abundant number, since it is smaller than the sum of its proper divisors (34833319510).

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

26478885290 is a wasteful number, since it uses less digits than its factorization.

26478885290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 26478885290 in words is "twenty-six billion, four hundred seventy-eight million, eight hundred eighty-five thousand, two hundred ninety".