21834432070 has 64 divisors (see below), whose sum is σ = 44127224064. Its totient is φ = 7710030720.

The previous prime is 21834432029. The next prime is 21834432083. The reversal of 21834432070 is 7023443812.

21834432070 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 804949 + ... + 831631.

It is an arithmetic number, because the mean of its divisors is an integer number (689487876).

Almost surely, 2^21834432070 is an apocalyptic number.

21834432070 is an abundant number, since it is smaller than the sum of its proper divisors (22292791994).

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

21834432070 is a wasteful number, since it uses less digits than its factorization.

21834432070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26917.

The product of its (nonzero) digits is 32256, while the sum is 34.

Adding to 21834432070 its reverse (7023443812), we get a palindrome (28857875882).

The spelling of 21834432070 in words is "twenty-one billion, eight hundred thirty-four million, four hundred thirty-two thousand, seventy".