165037197943 has 2 divisors, whose sum is σ = 165037197944. Its totient is φ = 165037197942.

The previous prime is 165037197931. The next prime is 165037197959. The reversal of 165037197943 is 349791730561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165037197943 - 2⁹ = 165037197431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165037197343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82518598971 + 82518598972.

It is an arithmetic number, because the mean of its divisors is an integer number (82518598972).

Almost surely, 2^165037197943 is an apocalyptic number.

165037197943 is a deficient number, since it is larger than the sum of its proper divisors (1).

165037197943 is an equidigital number, since it uses as much as digits as its factorization.

165037197943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4286520, while the sum is 55.

The spelling of 165037197943 in words is "one hundred sixty-five billion, thirty-seven million, one hundred ninety-seven thousand, nine hundred forty-three".