21346356006 has 16 divisors (see below), whose sum is σ = 47436346800. Its totient is φ = 7115451984.

The previous prime is 21346355977. The next prime is 21346356011. The reversal of 21346356006 is 60065364312.

21346356006 is a `hidden beast` number, since 2 + 1 + 3 + 46 + 3 + 5 + 600 + 6 = 666.

It is a congruent number.

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, 197651391 + ... + 197651498.

It is an arithmetic number, because the mean of its divisors is an integer number (2964771675).

Almost surely, 2^21346356006 is an apocalyptic number.

21346356006 is an abundant number, since it is smaller than the sum of its proper divisors (26089990794).

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

21346356006 is a wasteful number, since it uses less digits than its factorization.

21346356006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395302900 (or 395302894 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 21346356006 in words is "twenty-one billion, three hundred forty-six million, three hundred fifty-six thousand, six".