26645442306 has 32 divisors (see below), whose sum is σ = 60979043328. Its totient is φ = 7603586640.

The previous prime is 26645442233. The next prime is 26645442311. The reversal of 26645442306 is 60324454662.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357070 + ... + 425193.

It is an arithmetic number, because the mean of its divisors is an integer number (1905595104).

Almost surely, 2^26645442306 is an apocalyptic number.

26645442306 is an abundant number, since it is smaller than the sum of its proper divisors (34333601022).

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

26645442306 is a wasteful number, since it uses less digits than its factorization.

26645442306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783086.

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 26645442306 its reverse (60324454662), we get a palindrome (86969896968).

The spelling of 26645442306 in words is "twenty-six billion, six hundred forty-five million, four hundred forty-two thousand, three hundred six".