16697071080 has 160 divisors (see below), whose sum is σ = 56198019240. Its totient is φ = 4446420480.

The previous prime is 16697071031. The next prime is 16697071087. The reversal of 16697071080 is 8017079661.

It can be written as a sum of positive squares in 4 ways, for example, as 15555577284 + 1141493796 = 124722^2 + 33786^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (16697071087) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2656902 + ... + 2663178.

Almost surely, 2^16697071080 is an apocalyptic number.

16697071080 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 16697071080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28099009620).

16697071080 is an abundant number, since it is smaller than the sum of its proper divisors (39500948160).

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

16697071080 is a wasteful number, since it uses less digits than its factorization.

16697071080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121 (or 7108 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 16697071080 in words is "sixteen billion, six hundred ninety-seven million, seventy-one thousand, eighty".