26531585890242 has 16 divisors (see below), whose sum is σ = 53133268449792. Its totient is φ = 8832179185200.

The previous prime is 26531585890211. The next prime is 26531585890259. The reversal of 26531585890242 is 24209858513562.

It is a super-3 number, since 3×26531585890242³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2920689634 + ... + 2920698717.

It is an arithmetic number, because the mean of its divisors is an integer number (3320829278112).

Almost surely, 2^{26531585890242} is an apocalyptic number.

26531585890242 is an abundant number, since it is smaller than the sum of its proper divisors (26601682559550).

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

26531585890242 is a wasteful number, since it uses less digits than its factorization.

26531585890242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841389113.

The product of its (nonzero) digits is 41472000, while the sum is 60.

The spelling of 26531585890242 in words is "twenty-six trillion, five hundred thirty-one billion, five hundred eighty-five million, eight hundred ninety thousand, two hundred forty-two".