2061156940640 has 288 divisors, whose sum is σ = 6021699866784. Its totient is φ = 662452224000.

The previous prime is 2061156940631. The next prime is 2061156940651. The reversal of 2061156940640 is 460496511602.

It is a junction number, because it is equal to n+sod(n) for n = 2061156940591 and 2061156940600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33422474 + ... + 33484086.

It is an arithmetic number, because the mean of its divisors is an integer number (20908680093).

Almost surely, 2^{2061156940640} is an apocalyptic number.

2061156940640 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 2061156940640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3010849933392).

2061156940640 is an abundant number, since it is smaller than the sum of its proper divisors (3960542926144).

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

2061156940640 is a wasteful number, since it uses less digits than its factorization.

2061156940640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61910 (or 61895 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 2061156940640 in words is "two trillion, sixty-one billion, one hundred fifty-six million, nine hundred forty thousand, six hundred forty".