42891733273 has 2 divisors, whose sum is σ = 42891733274. Its totient is φ = 42891733272.

The previous prime is 42891733231. The next prime is 42891733321. The reversal of 42891733273 is 37233719824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31793742864 + 11097990409 = 178308^2 + 105347^2 .

It is a cyclic number.

It is not a de Polignac number, because 42891733273 - 2²¹ = 42889636121 is a prime.

It is not a weakly prime, because it can be changed into another prime (42891733223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21445866636 + 21445866637.

It is an arithmetic number, because the mean of its divisors is an integer number (21445866637).

Almost surely, 2^42891733273 is an apocalyptic number.

It is an amenable number.

42891733273 is a deficient number, since it is larger than the sum of its proper divisors (1).

42891733273 is an equidigital number, since it uses as much as digits as its factorization.

42891733273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 49.

The spelling of 42891733273 in words is "forty-two billion, eight hundred ninety-one million, seven hundred thirty-three thousand, two hundred seventy-three".