26405680272 has 40 divisors (see below), whose sum is σ = 68230064544. Its totient is φ = 8799907584.

The previous prime is 26405680267. The next prime is 26405680291. The reversal of 26405680272 is 27208650462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161188 + ... + 280700.

Almost surely, 2^26405680272 is an apocalyptic number.

It is an amenable number.

26405680272 is an abundant number, since it is smaller than the sum of its proper divisors (41824384272).

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

26405680272 is a wasteful number, since it uses less digits than its factorization.

26405680272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124127 (or 124121 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 26405680272 in words is "twenty-six billion, four hundred five million, six hundred eighty thousand, two hundred seventy-two".