20965946484 has 24 divisors (see below), whose sum is σ = 55909190848. Its totient is φ = 5990270400.

The previous prime is 20965946479. The next prime is 20965946513. The reversal of 20965946484 is 48464956902.

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, 124797217 + ... + 124797384.

Almost surely, 2^20965946484 is an apocalyptic number.

It is an amenable number.

20965946484 is an abundant number, since it is smaller than the sum of its proper divisors (34943244364).

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

20965946484 is a wasteful number, since it uses less digits than its factorization.

20965946484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249594615 (or 249594613 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 57.

The spelling of 20965946484 in words is "twenty billion, nine hundred sixty-five million, nine hundred forty-six thousand, four hundred eighty-four".