20783696268 has 18 divisors (see below), whose sum is σ = 48496456596. Its totient is φ = 6927732288.

The previous prime is 20783696251. The next prime is 20783696291. The reversal of 20783696268 is 86269638702.

It is a happy number.

It is a super-3 number, since 3×20783696268³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 478596 + ... + 520212.

Almost surely, 2^20783696268 is an apocalyptic number.

It is an amenable number.

20783696268 is an abundant number, since it is smaller than the sum of its proper divisors (27712760328).

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

20783696268 is an frugal number, since it uses more digits than its factorization.

20783696268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83241 (or 41622 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 20783696268 in words is "twenty billion, seven hundred eighty-three million, six hundred ninety-six thousand, two hundred sixty-eight".