21764150710067 has 16 divisors (see below), whose sum is σ = 22492992952320. Its totient is φ = 21046486154400.

The previous prime is 21764150710063. The next prime is 21764150710091. The reversal of 21764150710067 is 76001705146712.

It is a cyclic number.

It is not a de Polignac number, because 21764150710067 - 2² = 21764150710063 is a prime.

It is a super-2 number, since 2×21764150710067² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21764150710063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4546592 + ... + 8012477.

It is an arithmetic number, because the mean of its divisors is an integer number (1405812059520).

Almost surely, 2^{21764150710067} is an apocalyptic number.

21764150710067 is a deficient number, since it is larger than the sum of its proper divisors (728842242253).

21764150710067 is a wasteful number, since it uses less digits than its factorization.

21764150710067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12559514.

The product of its (nonzero) digits is 493920, while the sum is 47.

Adding to 21764150710067 its reverse (76001705146712), we get a palindrome (97765855856779).

The spelling of 21764150710067 in words is "twenty-one trillion, seven hundred sixty-four billion, one hundred fifty million, seven hundred ten thousand, sixty-seven".