21061716062 has 4 divisors (see below), whose sum is σ = 31592574096. Its totient is φ = 10530858030.

The previous prime is 21061716061. The next prime is 21061716073. The reversal of 21061716062 is 26061716012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21061716061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265429014 + ... + 5265429017.

It is an arithmetic number, because the mean of its divisors is an integer number (7898143524).

Almost surely, 2^21061716062 is an apocalyptic number.

21061716062 is a deficient number, since it is larger than the sum of its proper divisors (10530858034).

21061716062 is a wasteful number, since it uses less digits than its factorization.

21061716062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530858033.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 21061716062 in words is "twenty-one billion, sixty-one million, seven hundred sixteen thousand, sixty-two".