21343146516 has 60 divisors (see below), whose sum is σ = 58221099552. Its totient is φ = 6805058832.

The previous prime is 21343146499. The next prime is 21343146527. The reversal of 21343146516 is 61564134312.

21343146516 is a `hidden beast` number, since 2 + 134 + 3 + 1 + 4 + 6 + 516 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1424590 + ... + 1439493.

Almost surely, 2^21343146516 is an apocalyptic number.

It is an amenable number.

21343146516 is an abundant number, since it is smaller than the sum of its proper divisors (36877953036).

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

21343146516 is a wasteful number, since it uses less digits than its factorization.

21343146516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864122 (or 2864111 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 21343146516 in words is "twenty-one billion, three hundred forty-three million, one hundred forty-six thousand, five hundred sixteen".