26980388920 has 16 divisors (see below), whose sum is σ = 60705875160. Its totient is φ = 10792155552.

The previous prime is 26980388909. The next prime is 26980388983. The reversal of 26980388920 is 2988308962.

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, 337254822 + ... + 337254901.

Almost surely, 2^26980388920 is an apocalyptic number.

26980388920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26980388920 is an abundant number, since it is smaller than the sum of its proper divisors (33725486240).

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

26980388920 is a wasteful number, since it uses less digits than its factorization.

26980388920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674509734 (or 674509730 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 26980388920 in words is "twenty-six billion, nine hundred eighty million, three hundred eighty-eight thousand, nine hundred twenty".