21152420026264 has 16 divisors (see below), whose sum is σ = 39660866028000. Its totient is φ = 10576189085472.

The previous prime is 21152420026237. The next prime is 21152420026267. The reversal of 21152420026264 is 46262002425112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21152420026267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2201562 + ... + 6866710.

It is an arithmetic number, because the mean of its divisors is an integer number (2478804126750).

Almost surely, 2^{21152420026264} is an apocalyptic number.

It is an amenable number.

21152420026264 is a deficient number, since it is larger than the sum of its proper divisors (18508446001736).

21152420026264 is a wasteful number, since it uses less digits than its factorization.

21152420026264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231922 (or 5231918 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 21152420026264 in words is "twenty-one trillion, one hundred fifty-two billion, four hundred twenty million, twenty-six thousand, two hundred sixty-four".