21607035834 has 16 divisors (see below), whose sum is σ = 44268073920. Its totient is φ = 7026678240.

The previous prime is 21607035773. The next prime is 21607035899. The reversal of 21607035834 is 43853070612.

It is a junction number, because it is equal to n+sod(n) for n = 21607035792 and 21607035801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43916494 + ... + 43916985.

It is an arithmetic number, because the mean of its divisors is an integer number (2766754620).

Almost surely, 2^21607035834 is an apocalyptic number.

21607035834 is an abundant number, since it is smaller than the sum of its proper divisors (22661038086).

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

21607035834 is a wasteful number, since it uses less digits than its factorization.

21607035834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87833525.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 21607035834 in words is "twenty-one billion, six hundred seven million, thirty-five thousand, eight hundred thirty-four".