97145357443 has 2 divisors, whose sum is σ = 97145357444. Its totient is φ = 97145357442.

The previous prime is 97145357429. The next prime is 97145357471. The reversal of 97145357443 is 34475354179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97145357443 - 2²⁵ = 97111803011 is a prime.

It is the 311682-nd Hogben number.

It is not a weakly prime, because it can be changed into another prime (97145327443) by changing a digit.

It is a nontrivial repunit in base 311681.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48572678721 + 48572678722.

It is an arithmetic number, because the mean of its divisors is an integer number (48572678722).

Almost surely, 2^97145357443 is an apocalyptic number.

97145357443 is a deficient number, since it is larger than the sum of its proper divisors (1).

97145357443 is an equidigital number, since it uses as much as digits as its factorization.

97145357443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 52.

The spelling of 97145357443 in words is "ninety-seven billion, one hundred forty-five million, three hundred fifty-seven thousand, four hundred forty-three".