2845305901620 has 576 divisors, whose sum is σ = 11120769676800. Its totient is φ = 598630072320.

The previous prime is 2845305901561. The next prime is 2845305901643. The reversal of 2845305901620 is 261095035482.

2845305901620 is a `hidden beast` number, since 2 + 8 + 4 + 5 + 30 + 590 + 1 + 6 + 20 = 666.

It is a super-2 number, since 2×2845305901620² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 123477300 + ... + 123500340.

It is an arithmetic number, because the mean of its divisors is an integer number (19306891800).

Almost surely, 2^{2845305901620} is an apocalyptic number.

2845305901620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2845305901620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5560384838400).

2845305901620 is an abundant number, since it is smaller than the sum of its proper divisors (8275463775180).

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

2845305901620 is a wasteful number, since it uses less digits than its factorization.

2845305901620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23445 (or 23430 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 2845305901620 in words is "two trillion, eight hundred forty-five billion, three hundred five million, nine hundred one thousand, six hundred twenty".