16870071618500 has 96 divisors (see below), whose sum is σ = 37263111631200. Its totient is φ = 6671331532800.

The previous prime is 16870071618487. The next prime is 16870071618523. The reversal of 16870071618500 is 581617007861.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 14306428723456 + 2563642895044 = 3782384^2 + 1601138^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417256286 + ... + 417296714.

It is an arithmetic number, because the mean of its divisors is an integer number (388157412825).

Almost surely, 2^{16870071618500} is an apocalyptic number.

16870071618500 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 16870071618500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18631555815600).

16870071618500 is an abundant number, since it is smaller than the sum of its proper divisors (20393040012700).

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

16870071618500 is a wasteful number, since it uses less digits than its factorization.

16870071618500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49914 (or 49902 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 50.

The spelling of 16870071618500 in words is "sixteen trillion, eight hundred seventy billion, seventy-one million, six hundred eighteen thousand, five hundred".