21066361262 has 8 divisors (see below), whose sum is σ = 31600386576. Its totient is φ = 10532899072.

The previous prime is 21066361259. The next prime is 21066361307. The reversal of 21066361262 is 26216366012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29738 + ... + 207405.

It is an arithmetic number, because the mean of its divisors is an integer number (3950048322).

Almost surely, 2^21066361262 is an apocalyptic number.

21066361262 is a deficient number, since it is larger than the sum of its proper divisors (10534025314).

21066361262 is a wasteful number, since it uses less digits than its factorization.

21066361262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281562.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 21066361262 in words is "twenty-one billion, sixty-six million, three hundred sixty-one thousand, two hundred sixty-two".