26051397980 has 12 divisors (see below), whose sum is σ = 54707935800. Its totient is φ = 10420559184.

The previous prime is 26051397973. The next prime is 26051397989. The reversal of 26051397980 is 8979315062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26051397989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651284930 + ... + 651284969.

It is an arithmetic number, because the mean of its divisors is an integer number (4558994650).

Almost surely, 2^26051397980 is an apocalyptic number.

26051397980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26051397980 is an abundant number, since it is smaller than the sum of its proper divisors (28656537820).

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

26051397980 is a wasteful number, since it uses less digits than its factorization.

26051397980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302569908 (or 1302569906 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 26051397980 in words is "twenty-six billion, fifty-one million, three hundred ninety-seven thousand, nine hundred eighty".