2061515896804 has 243 divisors, whose sum is σ = 4764368669193. Its totient is φ = 780086282976.

The previous prime is 2061515896799. The next prime is 2061515896841. The reversal of 2061515896804 is 4086985151602.

The square root of 2061515896804 is 1435798.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 304957972900 + 1756557923904 = 552230^2 + 1325352^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 89631125937 + ... + 89631125959.

Almost surely, 2^{2061515896804} is an apocalyptic number.

2061515896804 is the 1435798-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2061515896804

2061515896804 is an abundant number, since it is smaller than the sum of its proper divisors (2702852772389).

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

2061515896804 is an frugal number, since it uses more digits than its factorization.

2061515896804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 2061515896804 in words is "two trillion, sixty-one billion, five hundred fifteen million, eight hundred ninety-six thousand, eight hundred four".