21923155343 has 2 divisors, whose sum is σ = 21923155344. Its totient is φ = 21923155342.

The previous prime is 21923155279. The next prime is 21923155349. The reversal of 21923155343 is 34355132912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21923155343 - 2⁶ = 21923155279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21923155297 and 21923155306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21923155349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10961577671 + 10961577672.

It is an arithmetic number, because the mean of its divisors is an integer number (10961577672).

Almost surely, 2^21923155343 is an apocalyptic number.

21923155343 is a deficient number, since it is larger than the sum of its proper divisors (1).

21923155343 is an equidigital number, since it uses as much as digits as its factorization.

21923155343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 38.

The spelling of 21923155343 in words is "twenty-one billion, nine hundred twenty-three million, one hundred fifty-five thousand, three hundred forty-three".