26781492383569 has 32 divisors (see below), whose sum is σ = 33449687064576. Its totient is φ = 20831346184320.

The previous prime is 26781492383563. The next prime is 26781492383599. The reversal of 26781492383569 is 96538329418762.

It is not a de Polignac number, because 26781492383569 - 2³ = 26781492383561 is a prime.

It is a super-2 number, since 2×26781492383569² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26781492383561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362330514 + ... + 362404420.

It is an arithmetic number, because the mean of its divisors is an integer number (1045302720768).

Almost surely, 2^{26781492383569} is an apocalyptic number.

It is an amenable number.

26781492383569 is a deficient number, since it is larger than the sum of its proper divisors (6668194681007).

26781492383569 is a wasteful number, since it uses less digits than its factorization.

26781492383569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82285.

The product of its digits is 940584960, while the sum is 73.

The spelling of 26781492383569 in words is "twenty-six trillion, seven hundred eighty-one billion, four hundred ninety-two million, three hundred eighty-three thousand, five hundred sixty-nine".