16667389476972 has 216 divisors, whose sum is σ = 48207418052976. Its totient is φ = 4825841965056.

The previous prime is 16667389476967. The next prime is 16667389477003. The reversal of 16667389476972 is 27967498376661.

It is a junction number, because it is equal to n+sod(n) for n = 16667389476891 and 16667389476900.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1094586823 + ... + 1094602049.

It is an arithmetic number, because the mean of its divisors is an integer number (223182490986).

Almost surely, 2^{16667389476972} is an apocalyptic number.

16667389476972 is a gapful number since it is divisible by the number (12) 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 16667389476972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24103709026488).

16667389476972 is an abundant number, since it is smaller than the sum of its proper divisors (31540028576004).

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

16667389476972 is a wasteful number, since it uses less digits than its factorization.

16667389476972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23377 (or 23355 counting only the distinct ones).

The product of its digits is 6913299456, while the sum is 81.

The spelling of 16667389476972 in words is "sixteen trillion, six hundred sixty-seven billion, three hundred eighty-nine million, four hundred seventy-six thousand, nine hundred seventy-two".