16651463420 has 24 divisors (see below), whose sum is σ = 34984916064. Its totient is φ = 6657377216.

The previous prime is 16651463407. The next prime is 16651463431. The reversal of 16651463420 is 2436415661.

It is a congruent number.

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, 157727 + ... + 241206.

It is an arithmetic number, because the mean of its divisors is an integer number (1457704836).

Almost surely, 2^16651463420 is an apocalyptic number.

16651463420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16651463420 is an abundant number, since it is smaller than the sum of its proper divisors (18333452644).

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

16651463420 is a wasteful number, since it uses less digits than its factorization.

16651463420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401029 (or 401027 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 16651463420 in words is "sixteen billion, six hundred fifty-one million, four hundred sixty-three thousand, four hundred twenty".