21880026513 has 48 divisors (see below), whose sum is σ = 32941209600. Its totient is φ = 13984268640.

The previous prime is 21880026449. The next prime is 21880026527. The reversal of 21880026513 is 31562008812.

It is a happy number.

It is not a de Polignac number, because 21880026513 - 2⁶ = 21880026449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21880026533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7760218 + ... + 7763036.

It is an arithmetic number, because the mean of its divisors is an integer number (686275200).

Almost surely, 2^21880026513 is an apocalyptic number.

It is an amenable number.

21880026513 is a deficient number, since it is larger than the sum of its proper divisors (11061183087).

21880026513 is a wasteful number, since it uses less digits than its factorization.

21880026513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 21880026513 in words is "twenty-one billion, eight hundred eighty million, twenty-six thousand, five hundred thirteen".