21214789621488 has 160 divisors (see below), whose sum is σ = 67279640256000. Its totient is φ = 6366245428224.

The previous prime is 21214789621477. The next prime is 21214789621499. The reversal of 21214789621488 is 88412698741212.

21214789621488 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 47 + 8 + 96 + 21 + 488 = 666.

It is an interprime number because it is at equal distance from previous prime (21214789621477) and next prime (21214789621499).

It is a super-2 number, since 2×21214789621488² (a number of 27 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 (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62629438 + ... + 62967261.

It is an arithmetic number, because the mean of its divisors is an integer number (420497751600).

Almost surely, 2^{21214789621488} is an apocalyptic number.

It is an amenable number.

21214789621488 is an abundant number, since it is smaller than the sum of its proper divisors (46064850634512).

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

21214789621488 is a wasteful number, since it uses less digits than its factorization.

21214789621488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125596756 (or 125596744 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 63.

The spelling of 21214789621488 in words is "twenty-one trillion, two hundred fourteen billion, seven hundred eighty-nine million, six hundred twenty-one thousand, four hundred eighty-eight".