16890713820 has 36 divisors (see below), whose sum is σ = 51235165800. Its totient is φ = 4504190304.

The previous prime is 16890713813. The next prime is 16890713821. The reversal of 16890713820 is 2831709861.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16890713821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46918470 + ... + 46918829.

It is an arithmetic number, because the mean of its divisors is an integer number (1423199050).

Almost surely, 2^16890713820 is an apocalyptic number.

16890713820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16890713820 is an abundant number, since it is smaller than the sum of its proper divisors (34344451980).

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

16890713820 is a wasteful number, since it uses less digits than its factorization.

16890713820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93837314 (or 93837309 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 16890713820 in words is "sixteen billion, eight hundred ninety million, seven hundred thirteen thousand, eight hundred twenty".