77016145693 has 2 divisors, whose sum is σ = 77016145694. Its totient is φ = 77016145692.

The previous prime is 77016145681. The next prime is 77016145699. The reversal of 77016145693 is 39654161077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41279267929 + 35736877764 = 203173^2 + 189042^2 .

It is an emirp because it is prime and its reverse (39654161077) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77016145693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77016145699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38508072846 + 38508072847.

It is an arithmetic number, because the mean of its divisors is an integer number (38508072847).

Almost surely, 2^77016145693 is an apocalyptic number.

It is an amenable number.

77016145693 is a deficient number, since it is larger than the sum of its proper divisors (1).

77016145693 is an equidigital number, since it uses as much as digits as its factorization.

77016145693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 77016145693 in words is "seventy-seven billion, sixteen million, one hundred forty-five thousand, six hundred ninety-three".