16421717164 has 24 divisors (see below), whose sum is σ = 29088763200. Its totient is φ = 8110819200.

The previous prime is 16421717131. The next prime is 16421717267. The reversal of 16421717164 is 46171712461.

It is a super-2 number, since 2×16421717164² (a number of 21 digits) contains 22 as substring.

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, 358989 + ... + 402139.

It is an arithmetic number, because the mean of its divisors is an integer number (1212031800).

Almost surely, 2^16421717164 is an apocalyptic number.

It is an amenable number.

16421717164 is a deficient number, since it is larger than the sum of its proper divisors (12667046036).

16421717164 is a wasteful number, since it uses less digits than its factorization.

16421717164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44313 (or 44311 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The spelling of 16421717164 in words is "sixteen billion, four hundred twenty-one million, seven hundred seventeen thousand, one hundred sixty-four".