2161564635470 has 64 divisors (see below), whose sum is σ = 4220662070016. Its totient is φ = 793824645120.

The previous prime is 2161564635467. The next prime is 2161564635509. The reversal of 2161564635470 is 745364651612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95875019 + ... + 95897561.

It is an arithmetic number, because the mean of its divisors is an integer number (65947844844).

Almost surely, 2^{2161564635470} is an apocalyptic number.

2161564635470 is a deficient number, since it is larger than the sum of its proper divisors (2059097434546).

2161564635470 is a wasteful number, since it uses less digits than its factorization.

2161564635470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36365.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 2161564635470 in words is "two trillion, one hundred sixty-one billion, five hundred sixty-four million, six hundred thirty-five thousand, four hundred seventy".