16671511020 has 96 divisors (see below), whose sum is σ = 47949612480. Its totient is φ = 4325437440.

The previous prime is 16671510941. The next prime is 16671511027. The reversal of 16671511020 is 2011517661.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (16671511027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 908496 + ... + 926664.

It is an arithmetic number, because the mean of its divisors is an integer number (499475130).

Almost surely, 2^16671511020 is an apocalyptic number.

16671511020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16671511020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23974806240).

16671511020 is an abundant number, since it is smaller than the sum of its proper divisors (31278101460).

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

16671511020 is a wasteful number, since it uses less digits than its factorization.

16671511020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18595 (or 18593 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 16671511020 in words is "sixteen billion, six hundred seventy-one million, five hundred eleven thousand, twenty".