5451377779 has 2 divisors, whose sum is σ = 5451377780. Its totient is φ = 5451377778.

The previous prime is 5451377741. The next prime is 5451377797. The reversal of 5451377779 is 9777731545.

Together with next prime (5451377797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5451377779 - 2¹⁹ = 5450853491 is a prime.

It is not a weakly prime, because it can be changed into another prime (5451377719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725688889 + 2725688890.

It is an arithmetic number, because the mean of its divisors is an integer number (2725688890).

Almost surely, 2^5451377779 is an apocalyptic number.

5451377779 is a deficient number, since it is larger than the sum of its proper divisors (1).

5451377779 is an equidigital number, since it uses as much as digits as its factorization.

5451377779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6482700, while the sum is 55.

The square root of 5451377779 is about 73833.4462083411. The cubic root of 5451377779 is about 1759.9571463180.

The spelling of 5451377779 in words is "five billion, four hundred fifty-one million, three hundred seventy-seven thousand, seven hundred seventy-nine".