20255996468 has 24 divisors (see below), whose sum is σ = 38547584712. Its totient is φ = 9274604544.

The previous prime is 20255996459. The next prime is 20255996513. The reversal of 20255996468 is 86469955202.

It can be written as a sum of positive squares in 4 ways, for example, as 16781129764 + 3474866704 = 129542^2 + 58948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4022921 + ... + 4027952.

It is an arithmetic number, because the mean of its divisors is an integer number (1606149363).

Almost surely, 2^20255996468 is an apocalyptic number.

It is an amenable number.

20255996468 is a deficient number, since it is larger than the sum of its proper divisors (18291588244).

20255996468 is a wasteful number, since it uses less digits than its factorization.

20255996468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050931 (or 8050929 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 20255996468 in words is "twenty billion, two hundred fifty-five million, nine hundred ninety-six thousand, four hundred sixty-eight".