161792437487 has 2 divisors, whose sum is σ = 161792437488. Its totient is φ = 161792437486.

The previous prime is 161792437463. The next prime is 161792437517. The reversal of 161792437487 is 784734297161.

It is a weak prime.

It is an emirp because it is prime and its reverse (784734297161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161792437487 - 2¹² = 161792433391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161792437427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80896218743 + 80896218744.

It is an arithmetic number, because the mean of its divisors is an integer number (80896218744).

Almost surely, 2^161792437487 is an apocalyptic number.

161792437487 is a deficient number, since it is larger than the sum of its proper divisors (1).

161792437487 is an equidigital number, since it uses as much as digits as its factorization.

161792437487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 59.

The spelling of 161792437487 in words is "one hundred sixty-one billion, seven hundred ninety-two million, four hundred thirty-seven thousand, four hundred eighty-seven".