21739348034 has 32 divisors (see below), whose sum is σ = 33918445440. Its totient is φ = 10443177472.

The previous prime is 21739347997. The next prime is 21739348061. The reversal of 21739348034 is 43084393712.

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, 1638194 + ... + 1651410.

It is an arithmetic number, because the mean of its divisors is an integer number (1059951420).

Almost surely, 2^21739348034 is an apocalyptic number.

21739348034 is a deficient number, since it is larger than the sum of its proper divisors (12179097406).

21739348034 is a wasteful number, since it uses less digits than its factorization.

21739348034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13594.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 21739348034 in words is "twenty-one billion, seven hundred thirty-nine million, three hundred forty-eight thousand, thirty-four".