26199954496 has 21 divisors (see below), whose sum is σ = 51993104421. Its totient is φ = 13099329792.

The previous prime is 26199954493. The next prime is 26199954497. The reversal of 26199954496 is 69445999162.

The square root of 26199954496 is 161864.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13670286400 + 12529668096 = 116920^2 + 111936^2 .

It is a super-2 number, since 2×26199954496² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26199954493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1284796 + ... + 1305028.

Almost surely, 2^26199954496 is an apocalyptic number.

26199954496 is the 161864-th square number.

It is an amenable number.

26199954496 is a deficient number, since it is larger than the sum of its proper divisors (25793149925).

26199954496 is an frugal number, since it uses more digits than its factorization.

26199954496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40478 (or 20235 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 64.

Multiplying 26199954496 by its sum of digits (64), we get a square (1676797087744 = 1294912²).

26199954496 divided by its sum of digits (64) gives a square (409374289 = 20233²).

The spelling of 26199954496 in words is "twenty-six billion, one hundred ninety-nine million, nine hundred fifty-four thousand, four hundred ninety-six".