2061599835461 has 2 divisors, whose sum is σ = 2061599835462. Its totient is φ = 2061599835460.

The previous prime is 2061599835391. The next prime is 2061599835523. The reversal of 2061599835461 is 1645389951602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1995455711236 + 66144124225 = 1412606^2 + 257185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2061599835461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2061599835461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061599835161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030799917730 + 1030799917731.

It is an arithmetic number, because the mean of its divisors is an integer number (1030799917731).

Almost surely, 2^{2061599835461} is an apocalyptic number.

It is an amenable number.

2061599835461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061599835461 is an equidigital number, since it uses as much as digits as its factorization.

2061599835461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13996800, while the sum is 59.

The spelling of 2061599835461 in words is "two trillion, sixty-one billion, five hundred ninety-nine million, eight hundred thirty-five thousand, four hundred sixty-one".