21046027570 has 16 divisors (see below), whose sum is σ = 37887234840. Its totient is φ = 8417436544.

The previous prime is 21046027553. The next prime is 21046027573. The reversal of 21046027570 is 7572064012.

It can be written as a sum of positive squares in 4 ways, for example, as 9605372049 + 11440655521 = 98007^2 + 106961^2 .

It is not an unprimeable number, because it can be changed into a prime (21046027573) by changing a digit.

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, 27637 + ... + 207016.

Almost surely, 2^21046027570 is an apocalyptic number.

21046027570 is a deficient number, since it is larger than the sum of its proper divisors (16841207270).

21046027570 is a wasteful number, since it uses less digits than its factorization.

21046027570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243629.

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 21046027570 in words is "twenty-one billion, forty-six million, twenty-seven thousand, five hundred seventy".