21762974067 has 8 divisors (see below), whose sum is σ = 29288488896. Its totient is φ = 14373054312.

The previous prime is 21762974041. The next prime is 21762974069. The reversal of 21762974067 is 76047926712.

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

It is a de Polignac number, because none of the positive numbers 2^k-21762974067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21762974069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33898393 + ... + 33899034.

It is an arithmetic number, because the mean of its divisors is an integer number (3661061112).

Almost surely, 2^21762974067 is an apocalyptic number.

21762974067 is a deficient number, since it is larger than the sum of its proper divisors (7525514829).

21762974067 is a wasteful number, since it uses less digits than its factorization.

21762974067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67797537.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 21762974067 in words is "twenty-one billion, seven hundred sixty-two million, nine hundred seventy-four thousand, sixty-seven".