26258699972 has 24 divisors (see below), whose sum is σ = 46188135000. Its totient is φ = 13062260736.

The previous prime is 26258699969. The next prime is 26258699981. The reversal of 26258699972 is 27999685262.

It can be written as a sum of positive squares in 4 ways, for example, as 13545235456 + 12713464516 = 116384^2 + 112754^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26258699899 and 26258699908.

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, 605858 + ... + 647750.

It is an arithmetic number, because the mean of its divisors is an integer number (1924505625).

Almost surely, 2^26258699972 is an apocalyptic number.

It is an amenable number.

26258699972 is a deficient number, since it is larger than the sum of its proper divisors (19929435028).

26258699972 is a wasteful number, since it uses less digits than its factorization.

26258699972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42695 (or 42693 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 65.

The spelling of 26258699972 in words is "twenty-six billion, two hundred fifty-eight million, six hundred ninety-nine thousand, nine hundred seventy-two".