20768695488 has 70 divisors (see below), whose sum is σ = 61564935036. Its totient is φ = 6922896768.

The previous prime is 20768695463. The next prime is 20768695523. The reversal of 20768695488 is 88459686702.

20768695488 is a `hidden beast` number, since 2 + 0 + 7 + 6 + 86 + 9 + 548 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1997970 + ... + 2008337.

Almost surely, 2^20768695488 is an apocalyptic number.

It is an amenable number.

20768695488 is an abundant number, since it is smaller than the sum of its proper divisors (40796239548).

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

20768695488 is an equidigital number, since it uses as much as digits as its factorization.

20768695488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006331 (or 4006312 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 20768695488 in words is "twenty billion, seven hundred sixty-eight million, six hundred ninety-five thousand, four hundred eighty-eight".