21346344306 has 24 divisors (see below), whose sum is σ = 52857614784. Its totient is φ = 6098955480.

The previous prime is 21346344211. The next prime is 21346344317. The reversal of 21346344306 is 60344364312.

21346344306 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 6 + 344 + 306 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84707590 + ... + 84707841.

It is an arithmetic number, because the mean of its divisors is an integer number (2202400616).

Almost surely, 2^21346344306 is an apocalyptic number.

21346344306 is an abundant number, since it is smaller than the sum of its proper divisors (31511270478).

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

21346344306 is a wasteful number, since it uses less digits than its factorization.

21346344306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169415446 (or 169415443 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 21346344306 in words is "twenty-one billion, three hundred forty-six million, three hundred forty-four thousand, three hundred six".