16421486804 has 12 divisors (see below), whose sum is σ = 30428049204. Its totient is φ = 7727758464.

The previous prime is 16421486803. The next prime is 16421486819. The reversal of 16421486804 is 40868412461.

It can be written as a sum of positive squares in 2 ways, for example, as 12455006404 + 3966480400 = 111602^2 + 62980^2 .

It is a super-2 number, since 2×16421486804² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421486803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120746159 + ... + 120746294.

It is an arithmetic number, because the mean of its divisors is an integer number (2535670767).

Almost surely, 2^16421486804 is an apocalyptic number.

It is an amenable number.

16421486804 is a deficient number, since it is larger than the sum of its proper divisors (14006562400).

16421486804 is a wasteful number, since it uses less digits than its factorization.

16421486804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241492474 (or 241492472 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 16421486804 in words is "sixteen billion, four hundred twenty-one million, four hundred eighty-six thousand, eight hundred four".