74765734740161 has 2 divisors, whose sum is σ = 74765734740162. Its totient is φ = 74765734740160.

The previous prime is 74765734740131. The next prime is 74765734740199. The reversal of 74765734740161 is 16104743756747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53393198914225 + 21372535825936 = 7307065^2 + 4623044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74765734740161 is a prime.

It is a super-2 number, since 2×74765734740161² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74765734740094 and 74765734740103.

It is not a weakly prime, because it can be changed into another prime (74765734740131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37382867370080 + 37382867370081.

It is an arithmetic number, because the mean of its divisors is an integer number (37382867370081).

Almost surely, 2^{74765734740161} is an apocalyptic number.

It is an amenable number.

74765734740161 is a deficient number, since it is larger than the sum of its proper divisors (1).

74765734740161 is an equidigital number, since it uses as much as digits as its factorization.

74765734740161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82978560, while the sum is 62.

The spelling of 74765734740161 in words is "seventy-four trillion, seven hundred sixty-five billion, seven hundred thirty-four million, seven hundred forty thousand, one hundred sixty-one".