70400016677 has 2 divisors, whose sum is σ = 70400016678. Its totient is φ = 70400016676.

The previous prime is 70400016671. The next prime is 70400016679. The reversal of 70400016677 is 77661000407.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61239421156 + 9160595521 = 247466^2 + 95711^2 .

It is an emirp because it is prime and its reverse (77661000407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70400016677 - 2¹⁸ = 70399754533 is a prime.

Together with 70400016679, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70400016677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70400016671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35200008338 + 35200008339.

It is an arithmetic number, because the mean of its divisors is an integer number (35200008339).

Almost surely, 2^70400016677 is an apocalyptic number.

It is an amenable number.

70400016677 is a deficient number, since it is larger than the sum of its proper divisors (1).

70400016677 is an equidigital number, since it uses as much as digits as its factorization.

70400016677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 38.

The spelling of 70400016677 in words is "seventy billion, four hundred million, sixteen thousand, six hundred seventy-seven".