20749704216 has 64 divisors (see below), whose sum is σ = 52977045600. Its totient is φ = 6771072000.

The previous prime is 20749704203. The next prime is 20749704233. The reversal of 20749704216 is 61240794702.

It is a super-4 number, since 4×20749704216⁴ (a number of 42 digits) contains 4444 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, 167646 + ... + 263826.

Almost surely, 2^20749704216 is an apocalyptic number.

It is an amenable number.

20749704216 is an abundant number, since it is smaller than the sum of its proper divisors (32227341384).

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

20749704216 is a wasteful number, since it uses less digits than its factorization.

20749704216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96380 (or 96376 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 20749704216 in words is "twenty billion, seven hundred forty-nine million, seven hundred four thousand, two hundred sixteen".