21160510570 has 16 divisors (see below), whose sum is σ = 38309089320. Its totient is φ = 8415277504.

The previous prime is 21160510561. The next prime is 21160510583. The reversal of 21160510570 is 7501506112.

It can be written as a sum of positive squares in 4 ways, for example, as 20657450529 + 503060041 = 143727^2 + 22429^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6114025 + ... + 6117484.

Almost surely, 2^21160510570 is an apocalyptic number.

21160510570 is a deficient number, since it is larger than the sum of its proper divisors (17148578750).

21160510570 is a wasteful number, since it uses less digits than its factorization.

21160510570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12231689.

The product of its (nonzero) digits is 2100, while the sum is 28.

The spelling of 21160510570 in words is "twenty-one billion, one hundred sixty million, five hundred ten thousand, five hundred seventy".