20734706219 has 2 divisors, whose sum is σ = 20734706220. Its totient is φ = 20734706218.

The previous prime is 20734706119. The next prime is 20734706257. The reversal of 20734706219 is 91260743702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20734706219 - 2¹² = 20734702123 is a prime.

It is a super-2 number, since 2×20734706219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20734706119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10367353109 + 10367353110.

It is an arithmetic number, because the mean of its divisors is an integer number (10367353110).

Almost surely, 2^20734706219 is an apocalyptic number.

20734706219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20734706219 is an equidigital number, since it uses as much as digits as its factorization.

20734706219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 20734706219 in words is "twenty billion, seven hundred thirty-four million, seven hundred six thousand, two hundred nineteen".