21304132562000 has 80 divisors (see below), whose sum is σ = 51527344254672. Its totient is φ = 8519345049600.

The previous prime is 21304132561991. The next prime is 21304132562099. The reversal of 21304132562000 is 26523140312.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 17607188072464 + 3696944489536 = 4196092^2 + 1922744^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5953364 + ... + 8834636.

Almost surely, 2^{21304132562000} is an apocalyptic number.

21304132562000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21304132562000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25763672127336).

21304132562000 is an abundant number, since it is smaller than the sum of its proper divisors (30223211692672).

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

21304132562000 is a wasteful number, since it uses less digits than its factorization.

21304132562000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884993 (or 2884977 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 21304132562000 in words is "twenty-one trillion, three hundred four billion, one hundred thirty-two million, five hundred sixty-two thousand".