77165051401 has 2 divisors, whose sum is σ = 77165051402. Its totient is φ = 77165051400.

The previous prime is 77165051387. The next prime is 77165051419. The reversal of 77165051401 is 10415056177.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62438015376 + 14727036025 = 249876^2 + 121355^2 .

It is an emirp because it is prime and its reverse (10415056177) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77165051401 - 2¹⁹ = 77164527113 is a prime.

It is not a weakly prime, because it can be changed into another prime (77165052401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38582525700 + 38582525701.

It is an arithmetic number, because the mean of its divisors is an integer number (38582525701).

Almost surely, 2^77165051401 is an apocalyptic number.

It is an amenable number.

77165051401 is a deficient number, since it is larger than the sum of its proper divisors (1).

77165051401 is an equidigital number, since it uses as much as digits as its factorization.

77165051401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 77165051401 in words is "seventy-seven billion, one hundred sixty-five million, fifty-one thousand, four hundred one".