77420453611 has 2 divisors, whose sum is σ = 77420453612. Its totient is φ = 77420453610.

The previous prime is 77420453573. The next prime is 77420453633. The reversal of 77420453611 is 11635402477.

It is a strong prime.

It is an emirp because it is prime and its reverse (11635402477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77420453611 - 2¹⁵ = 77420420843 is a prime.

It is not a weakly prime, because it can be changed into another prime (77420453711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38710226805 + 38710226806.

It is an arithmetic number, because the mean of its divisors is an integer number (38710226806).

Almost surely, 2^77420453611 is an apocalyptic number.

77420453611 is a deficient number, since it is larger than the sum of its proper divisors (1).

77420453611 is an equidigital number, since it uses as much as digits as its factorization.

77420453611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 77420453611 in words is "seventy-seven billion, four hundred twenty million, four hundred fifty-three thousand, six hundred eleven".