16421970876 has 48 divisors (see below), whose sum is σ = 39759111168. Its totient is φ = 5269939200.

The previous prime is 16421970869. The next prime is 16421970919. The reversal of 16421970876 is 67807912461.

It is a super-2 number, since 2×16421970876² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42570 + ... + 186161.

It is an arithmetic number, because the mean of its divisors is an integer number (828314816).

Almost surely, 2^16421970876 is an apocalyptic number.

It is an amenable number.

16421970876 is an abundant number, since it is smaller than the sum of its proper divisors (23337140292).

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

16421970876 is a wasteful number, since it uses less digits than its factorization.

16421970876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228962 (or 228960 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 16421970876 in words is "sixteen billion, four hundred twenty-one million, nine hundred seventy thousand, eight hundred seventy-six".