20458748464 has 160 divisors (see below), whose sum is σ = 53546144256. Its totient is φ = 7327272960.

The previous prime is 20458748461. The next prime is 20458748483. The reversal of 20458748464 is 46484785402.

It is not an unprimeable number, because it can be changed into a prime (20458748461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 889234 + ... + 911950.

Almost surely, 2^20458748464 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 20458748464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26773072128).

20458748464 is an abundant number, since it is smaller than the sum of its proper divisors (33087395792).

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

20458748464 is a wasteful number, since it uses less digits than its factorization.

20458748464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22803 (or 22797 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 52.

The spelling of 20458748464 in words is "twenty billion, four hundred fifty-eight million, seven hundred forty-eight thousand, four hundred sixty-four".