21262521710 has 32 divisors (see below), whose sum is σ = 40328893440. Its totient is φ = 8048974752.

The previous prime is 21262521701. The next prime is 21262521751. The reversal of 21262521710 is 1712526212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125867 + ... + 241593.

It is an arithmetic number, because the mean of its divisors is an integer number (1260277920).

Almost surely, 2^21262521710 is an apocalyptic number.

21262521710 is a deficient number, since it is larger than the sum of its proper divisors (19066371730).

21262521710 is a wasteful number, since it uses less digits than its factorization.

21262521710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116720.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 21262521710 in words is "twenty-one billion, two hundred sixty-two million, five hundred twenty-one thousand, seven hundred ten".