3777780073 has 2 divisors, whose sum is σ = 3777780074. Its totient is φ = 3777780072.

The previous prime is 3777780043. The next prime is 3777780077. The reversal of 3777780073 is 3700877773.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3740178649 + 37601424 = 61157^2 + 6132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3777780073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3777779999 and 3777780026.

It is not a weakly prime, because it can be changed into another prime (3777780077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1888890036 + 1888890037.

It is an arithmetic number, because the mean of its divisors is an integer number (1888890037).

Almost surely, 2^3777780073 is an apocalyptic number.

It is an amenable number.

3777780073 is a deficient number, since it is larger than the sum of its proper divisors (1).

3777780073 is an equidigital number, since it uses as much as digits as its factorization.

3777780073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1210104, while the sum is 49.

The square root of 3777780073 is about 61463.6483866684. The cubic root of 3777780073 is about 1557.4432248644.

The spelling of 3777780073 in words is "three billion, seven hundred seventy-seven million, seven hundred eighty thousand, seventy-three".