26457312216 has 32 divisors (see below), whose sum is σ = 66378682800. Its totient is φ = 8787717120.

The previous prime is 26457312191. The next prime is 26457312247. The reversal of 26457312216 is 61221375462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1954801 + ... + 1968288.

Almost surely, 2^26457312216 is an apocalyptic number.

It is an amenable number.

26457312216 is an abundant number, since it is smaller than the sum of its proper divisors (39921370584).

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

26457312216 is a wasteful number, since it uses less digits than its factorization.

26457312216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923379 (or 3923375 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

Adding to 26457312216 its reverse (61221375462), we get a palindrome (87678687678).

The spelling of 26457312216 in words is "twenty-six billion, four hundred fifty-seven million, three hundred twelve thousand, two hundred sixteen".