19765747416 has 16 divisors (see below), whose sum is σ = 49414368600. Its totient is φ = 6588582464.

The previous prime is 19765747373. The next prime is 19765747451. The reversal of 19765747416 is 61474756791.

It is a super-2 number, since 2×19765747416² (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 3 ways as a sum of consecutive naturals, for example, 411786381 + ... + 411786428.

Almost surely, 2^19765747416 is an apocalyptic number.

It is an amenable number.

19765747416 is an abundant number, since it is smaller than the sum of its proper divisors (29648621184).

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

19765747416 is a wasteful number, since it uses less digits than its factorization.

19765747416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823572818 (or 823572814 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 57.

The spelling of 19765747416 in words is "nineteen billion, seven hundred sixty-five million, seven hundred forty-seven thousand, four hundred sixteen".