26515656472 has 16 divisors (see below), whose sum is σ = 49722613200. Its totient is φ = 13256292960.

The previous prime is 26515656469. The next prime is 26515656481. The reversal of 26515656472 is 27465651562.

It is a super-2 number, since 2×26515656472² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116779 + ... + 258202.

It is an arithmetic number, because the mean of its divisors is an integer number (3107663325).

Almost surely, 2^26515656472 is an apocalyptic number.

It is an amenable number.

26515656472 is a deficient number, since it is larger than the sum of its proper divisors (23206956728).

26515656472 is a wasteful number, since it uses less digits than its factorization.

26515656472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383826 (or 383822 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 49.

The spelling of 26515656472 in words is "twenty-six billion, five hundred fifteen million, six hundred fifty-six thousand, four hundred seventy-two".