16654565420 has 48 divisors (see below), whose sum is σ = 36508243968. Its totient is φ = 6369908160.

The previous prime is 16654565419. The next prime is 16654565437. The reversal of 16654565420 is 2456545661.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1886657 + ... + 1895463.

It is an arithmetic number, because the mean of its divisors is an integer number (760588416).

Almost surely, 2^16654565420 is an apocalyptic number.

16654565420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16654565420 is an abundant number, since it is smaller than the sum of its proper divisors (19853678548).

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

16654565420 is a wasteful number, since it uses less digits than its factorization.

16654565420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12950 (or 12948 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 16654565420 in words is "sixteen billion, six hundred fifty-four million, five hundred sixty-five thousand, four hundred twenty".