26609932980 has 72 divisors (see below), whose sum is σ = 81008344872. Its totient is φ = 7070351616.

The previous prime is 26609932969. The next prime is 26609933027. The reversal of 26609932980 is 8923990662.

26609932980 is a `hidden beast` number, since 2 + 6 + 609 + 9 + 3 + 29 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 354267684 + 26255665296 = 18822^2 + 162036^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216987 + ... + 316706.

It is an arithmetic number, because the mean of its divisors is an integer number (1125115901).

Almost surely, 2^26609932980 is an apocalyptic number.

26609932980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26609932980 is an abundant number, since it is smaller than the sum of its proper divisors (54398411892).

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

26609932980 is a wasteful number, since it uses less digits than its factorization.

26609932980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533985 (or 533980 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 26609932980 in words is "twenty-six billion, six hundred nine million, nine hundred thirty-two thousand, nine hundred eighty".