21430952379288 has 48 divisors (see below), whose sum is σ = 58042466659320. Its totient is φ = 7143613382016.

The previous prime is 21430952379223. The next prime is 21430952379323. The reversal of 21430952379288 is 88297325903412.

21430952379288 is a `hidden beast` number, since 2 + 1 + 4 + 30 + 9 + 523 + 79 + 2 + 8 + 8 = 666.

It is a super-2 number, since 2×21430952379288² (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 (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15373095 + ... + 16709097.

Almost surely, 2^{21430952379288} is an apocalyptic number.

It is an amenable number.

21430952379288 is an abundant number, since it is smaller than the sum of its proper divisors (36611514280032).

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

21430952379288 is a wasteful number, since it uses less digits than its factorization.

21430952379288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558808 (or 1558801 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 21430952379288 in words is "twenty-one trillion, four hundred thirty billion, nine hundred fifty-two million, three hundred seventy-nine thousand, two hundred eighty-eight".