21342360958 has 4 divisors (see below), whose sum is σ = 32013541440. Its totient is φ = 10671180478.

The previous prime is 21342360947. The next prime is 21342360959. The reversal of 21342360958 is 85906324312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342360959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5335590238 + ... + 5335590241.

It is an arithmetic number, because the mean of its divisors is an integer number (8003385360).

Almost surely, 2^21342360958 is an apocalyptic number.

21342360958 is a deficient number, since it is larger than the sum of its proper divisors (10671180482).

21342360958 is a wasteful number, since it uses less digits than its factorization.

21342360958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10671180481.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 21342360958 in words is "twenty-one billion, three hundred forty-two million, three hundred sixty thousand, nine hundred fifty-eight".