21329573462767 has 2 divisors, whose sum is σ = 21329573462768. Its totient is φ = 21329573462766.

The previous prime is 21329573462719. The next prime is 21329573462777. The reversal of 21329573462767 is 76726437592312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21329573462767 is a prime.

It is a super-2 number, since 2×21329573462767² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21329573462699 and 21329573462708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21329573462777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10664786731383 + 10664786731384.

It is an arithmetic number, because the mean of its divisors is an integer number (10664786731384).

Almost surely, 2^{21329573462767} is an apocalyptic number.

21329573462767 is a deficient number, since it is larger than the sum of its proper divisors (1).

21329573462767 is an equidigital number, since it uses as much as digits as its factorization.

21329573462767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160030080, while the sum is 64.

The spelling of 21329573462767 in words is "twenty-one trillion, three hundred twenty-nine billion, five hundred seventy-three million, four hundred sixty-two thousand, seven hundred sixty-seven".