26500166620 has 12 divisors (see below), whose sum is σ = 55650349944. Its totient is φ = 10600066640.

The previous prime is 26500166551. The next prime is 26500166633. The reversal of 26500166620 is 2666100562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662504146 + ... + 662504185.

It is an arithmetic number, because the mean of its divisors is an integer number (4637529162).

Almost surely, 2^26500166620 is an apocalyptic number.

26500166620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26500166620 is an abundant number, since it is smaller than the sum of its proper divisors (29150183324).

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

26500166620 is a wasteful number, since it uses less digits than its factorization.

26500166620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325008340 (or 1325008338 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 26500166620 in words is "twenty-six billion, five hundred million, one hundred sixty-six thousand, six hundred twenty".