26500551664 has 10 divisors (see below), whose sum is σ = 51344818880. Its totient is φ = 13250275824.

The previous prime is 26500551641. The next prime is 26500551713. The reversal of 26500551664 is 46615500562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828142224 + ... + 828142255.

It is an arithmetic number, because the mean of its divisors is an integer number (5134481888).

Almost surely, 2^26500551664 is an apocalyptic number.

It is an amenable number.

26500551664 is a deficient number, since it is larger than the sum of its proper divisors (24844267216).

26500551664 is a wasteful number, since it uses less digits than its factorization.

26500551664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656284487 (or 1656284481 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 26500551664 in words is "twenty-six billion, five hundred million, five hundred fifty-one thousand, six hundred sixty-four".