26121214840 has 32 divisors (see below), whose sum is σ = 67168838880. Its totient is φ = 8955844992.

The previous prime is 26121214811. The next prime is 26121214879. The reversal of 26121214840 is 4841212162.

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 7 ways as a sum of consecutive naturals, for example, 46644747 + ... + 46645306.

It is an arithmetic number, because the mean of its divisors is an integer number (2099026215).

Almost surely, 2^26121214840 is an apocalyptic number.

26121214840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26121214840 is an abundant number, since it is smaller than the sum of its proper divisors (41047624040).

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

26121214840 is a wasteful number, since it uses less digits than its factorization.

26121214840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93290071 (or 93290067 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 26121214840 in words is "twenty-six billion, one hundred twenty-one million, two hundred fourteen thousand, eight hundred forty".