77545454419 has 2 divisors, whose sum is σ = 77545454420. Its totient is φ = 77545454418.

The previous prime is 77545454387. The next prime is 77545454443. The reversal of 77545454419 is 91445454577.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77545454419 - 2⁵ = 77545454387 is a prime.

It is a super-2 number, since 2×77545454419² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77545454419.

It is not a weakly prime, because it can be changed into another prime (77545451419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38772727209 + 38772727210.

It is an arithmetic number, because the mean of its divisors is an integer number (38772727210).

Almost surely, 2^77545454419 is an apocalyptic number.

77545454419 is a deficient number, since it is larger than the sum of its proper divisors (1).

77545454419 is an equidigital number, since it uses as much as digits as its factorization.

77545454419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112000, while the sum is 55.

The spelling of 77545454419 in words is "seventy-seven billion, five hundred forty-five million, four hundred fifty-four thousand, four hundred nineteen".