20377332016548 has 144 divisors (see below), whose sum is σ = 51639508851840. Its totient is φ = 6251258237952.

The previous prime is 20377332016541. The next prime is 20377332016619. The reversal of 20377332016548 is 84561023377302.

It is a super-2 number, since 2×20377332016548² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20377332016548.

It is not an unprimeable number, because it can be changed into a prime (20377332016541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2971752736 + ... + 2971759592.

It is an arithmetic number, because the mean of its divisors is an integer number (358607700360).

Almost surely, 2^{20377332016548} 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 20377332016548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25819754425920).

20377332016548 is an abundant number, since it is smaller than the sum of its proper divisors (31262176835292).

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

20377332016548 is a wasteful number, since it uses less digits than its factorization.

20377332016548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046 (or 11031 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 20377332016548 in words is "twenty trillion, three hundred seventy-seven billion, three hundred thirty-two million, sixteen thousand, five hundred forty-eight".