2061564776415 has 24 divisors (see below), whose sum is σ = 3761451523440. Its totient is φ = 1041632728704.

The previous prime is 2061564776413. The next prime is 2061564776417. The reversal of 2061564776415 is 5146774651602.

2061564776415 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 564 + 7 + 7 + 64 + 15 = 666.

It is an interprime number because it is at equal distance from previous prime (2061564776413) and next prime (2061564776417).

It is not a de Polignac number, because 2061564776415 - 2¹ = 2061564776413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061564776413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1205592582 + ... + 1205594291.

It is an arithmetic number, because the mean of its divisors is an integer number (156727146810).

Almost surely, 2^{2061564776415} is an apocalyptic number.

2061564776415 is a deficient number, since it is larger than the sum of its proper divisors (1699886747025).

2061564776415 is a wasteful number, since it uses less digits than its factorization.

2061564776415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411186903 (or 2411186900 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 2061564776415 in words is "two trillion, sixty-one billion, five hundred sixty-four million, seven hundred seventy-six thousand, four hundred fifteen".