5121173777 has 2 divisors, whose sum is σ = 5121173778. Its totient is φ = 5121173776.

The previous prime is 5121173773. The next prime is 5121173819. The reversal of 5121173777 is 7773711215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5119545601 + 1628176 = 71551^2 + 1276^2 .

It is a cyclic number.

It is not a de Polignac number, because 5121173777 - 2² = 5121173773 is a prime.

It is not a weakly prime, because it can be changed into another prime (5121173773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560586888 + 2560586889.

It is an arithmetic number, because the mean of its divisors is an integer number (2560586889).

Almost surely, 2^5121173777 is an apocalyptic number.

It is an amenable number.

5121173777 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121173777 is an equidigital number, since it uses as much as digits as its factorization.

5121173777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72030, while the sum is 41.

The square root of 5121173777 is about 71562.3768260949. The cubic root of 5121173777 is about 1723.6794516435.

The spelling of 5121173777 in words is "five billion, one hundred twenty-one million, one hundred seventy-three thousand, seven hundred seventy-seven".