455077777477 has 2 divisors, whose sum is σ = 455077777478. Its totient is φ = 455077777476.

The previous prime is 455077777457. The next prime is 455077777481. The reversal of 455077777477 is 774777770554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440542822756 + 14534954721 = 663734^2 + 120561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455077777477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455077777417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227538888738 + 227538888739.

It is an arithmetic number, because the mean of its divisors is an integer number (227538888739).

Almost surely, 2^455077777477 is an apocalyptic number.

It is an amenable number.

455077777477 is a deficient number, since it is larger than the sum of its proper divisors (1).

455077777477 is an equidigital number, since it uses as much as digits as its factorization.

455077777477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329417200, while the sum is 67.

The spelling of 455077777477 in words is "four hundred fifty-five billion, seventy-seven million, seven hundred seventy-seven thousand, four hundred seventy-seven".