21734419020 has 48 divisors (see below), whose sum is σ = 63502306560. Its totient is φ = 5543851456.

The previous prime is 21734419001. The next prime is 21734419027. The reversal of 21734419020 is 2091443712.

It is not an unprimeable number, because it can be changed into a prime (21734419027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7873410 + ... + 7876169.

It is an arithmetic number, because the mean of its divisors is an integer number (1322964720).

Almost surely, 2^21734419020 is an apocalyptic number.

21734419020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21734419020 is an abundant number, since it is smaller than the sum of its proper divisors (41767887540).

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

21734419020 is a wasteful number, since it uses less digits than its factorization.

21734419020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15749614 (or 15749612 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 21734419020 in words is "twenty-one billion, seven hundred thirty-four million, four hundred nineteen thousand, twenty".