2061481374540 has 480 divisors, whose sum is σ = 7869570508800. Its totient is φ = 450706177152.

The previous prime is 2061481374503. The next prime is 2061481374553. The reversal of 2061481374540 is 454731841602.

2061481374540 is a `hidden beast` number, since 2 + 0 + 61 + 4 + 8 + 137 + 454 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 12699529 + ... + 12860831.

It is an arithmetic number, because the mean of its divisors is an integer number (16394938560).

Almost surely, 2^{2061481374540} is an apocalyptic number.

2061481374540 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 2061481374540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3934785254400).

2061481374540 is an abundant number, since it is smaller than the sum of its proper divisors (5808089134260).

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

2061481374540 is a wasteful number, since it uses less digits than its factorization.

2061481374540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161368 (or 161343 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 2061481374540 in words is "two trillion, sixty-one billion, four hundred eighty-one million, three hundred seventy-four thousand, five hundred forty".