21454332000 has 96 divisors (see below), whose sum is σ = 70284430944. Its totient is φ = 5721152000.

The previous prime is 21454331981. The next prime is 21454332013. The reversal of 21454332000 is 23345412.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×21454332000³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 881931 + ... + 905930.

It is an arithmetic number, because the mean of its divisors is an integer number (732129489).

Almost surely, 2^21454332000 is an apocalyptic number.

21454332000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21454332000 is an abundant number, since it is smaller than the sum of its proper divisors (48830098944).

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

21454332000 is a wasteful number, since it uses less digits than its factorization.

21454332000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787889 (or 1787871 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 21454332000 its reverse (23345412), we get a palindrome (21477677412).

The spelling of 21454332000 in words is "twenty-one billion, four hundred fifty-four million, three hundred thirty-two thousand".