20642416548 has 96 divisors (see below), whose sum is σ = 52670876160. Its totient is φ = 6253977600.

The previous prime is 20642416537. The next prime is 20642416607. The reversal of 20642416548 is 84561424602.

It is a super-5 number, since 5×20642416548⁵ (a number of 53 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4939836 + ... + 4944012.

It is an arithmetic number, because the mean of its divisors is an integer number (548654960).

Almost surely, 2^20642416548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20642416548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26335438080).

20642416548 is an abundant number, since it is smaller than the sum of its proper divisors (32028459612).

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

20642416548 is a wasteful number, since it uses less digits than its factorization.

20642416548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4677 (or 4675 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 20642416548 in words is "twenty billion, six hundred forty-two million, four hundred sixteen thousand, five hundred forty-eight".