21343016458 has 16 divisors (see below), whose sum is σ = 32238906336. Its totient is φ = 10596888720.

The previous prime is 21343016449. The next prime is 21343016467. The reversal of 21343016458 is 85461034312.

It is an interprime number because it is at equal distance from previous prime (21343016449) and next prime (21343016467).

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, 204085 + ... + 290407.

It is an arithmetic number, because the mean of its divisors is an integer number (2014931646).

Almost surely, 2^21343016458 is an apocalyptic number.

21343016458 is a deficient number, since it is larger than the sum of its proper divisors (10895889878).

21343016458 is a wasteful number, since it uses less digits than its factorization.

21343016458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87189.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 21343016458 in words is "twenty-one billion, three hundred forty-three million, sixteen thousand, four hundred fifty-eight".