26531572122 has 48 divisors (see below), whose sum is σ = 65437564608. Its totient is φ = 7690309440.

The previous prime is 26531572079. The next prime is 26531572141. The reversal of 26531572122 is 22127513562.

26531572122 is a `hidden beast` number, since 2 + 65 + 3 + 1 + 572 + 1 + 22 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2908443 + ... + 2917550.

It is an arithmetic number, because the mean of its divisors is an integer number (1363282596).

Almost surely, 2^26531572122 is an apocalyptic number.

26531572122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26531572122 is an abundant number, since it is smaller than the sum of its proper divisors (38905992486).

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

26531572122 is a wasteful number, since it uses less digits than its factorization.

26531572122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5826035 (or 5826032 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The spelling of 26531572122 in words is "twenty-six billion, five hundred thirty-one million, five hundred seventy-two thousand, one hundred twenty-two".