161347560547 has 2 divisors, whose sum is σ = 161347560548. Its totient is φ = 161347560546.

The previous prime is 161347560533. The next prime is 161347560617. The reversal of 161347560547 is 745065743161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161347560547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161347560547.

It is not a weakly prime, because it can be changed into another prime (161347510547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80673780273 + 80673780274.

It is an arithmetic number, because the mean of its divisors is an integer number (80673780274).

Almost surely, 2^161347560547 is an apocalyptic number.

161347560547 is a deficient number, since it is larger than the sum of its proper divisors (1).

161347560547 is an equidigital number, since it uses as much as digits as its factorization.

161347560547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 161347560547 in words is "one hundred sixty-one billion, three hundred forty-seven million, five hundred sixty thousand, five hundred forty-seven".