161370424651 has 2 divisors, whose sum is σ = 161370424652. Its totient is φ = 161370424650.

The previous prime is 161370424643. The next prime is 161370424669. The reversal of 161370424651 is 156424073161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161370424651 - 2³ = 161370424643 is a prime.

It is not a weakly prime, because it can be changed into another prime (161370424751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80685212325 + 80685212326.

It is an arithmetic number, because the mean of its divisors is an integer number (80685212326).

Almost surely, 2^161370424651 is an apocalyptic number.

161370424651 is a deficient number, since it is larger than the sum of its proper divisors (1).

161370424651 is an equidigital number, since it uses as much as digits as its factorization.

161370424651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 161370424651 in words is "one hundred sixty-one billion, three hundred seventy million, four hundred twenty-four thousand, six hundred fifty-one".