2056641061540 has 48 divisors (see below), whose sum is σ = 4684634619840. Its totient is φ = 753912017280.

The previous prime is 2056641061523. The next prime is 2056641061591. The reversal of 2056641061540 is 451601466502.

It is a junction number, because it is equal to n+sod(n) for n = 2056641061493 and 2056641061502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28417666 + ... + 28489945.

It is an arithmetic number, because the mean of its divisors is an integer number (97596554580).

Almost surely, 2^{2056641061540} is an apocalyptic number.

2056641061540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2056641061540 is an abundant number, since it is smaller than the sum of its proper divisors (2627993558300).

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

2056641061540 is a wasteful number, since it uses less digits than its factorization.

2056641061540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56907772 (or 56907770 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 2056641061540 in words is "two trillion, fifty-six billion, six hundred forty-one million, sixty-one thousand, five hundred forty".