77738153 has 2 divisors, whose sum is σ = 77738154. Its totient is φ = 77738152.

The previous prime is 77738107. The next prime is 77738159. The reversal of 77738153 is 35183777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42549529 + 35188624 = 6523^2 + 5932^2 .

It is a cyclic number.

It is not a de Polignac number, because 77738153 - 2¹⁰ = 77737129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77738153.

It is not a weakly prime, because it can be changed into another prime (77738159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38869076 + 38869077.

It is an arithmetic number, because the mean of its divisors is an integer number (38869077).

Almost surely, 2^77738153 is an apocalyptic number.

It is an amenable number.

77738153 is a deficient number, since it is larger than the sum of its proper divisors (1).

77738153 is an equidigital number, since it uses as much as digits as its factorization.

77738153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 41.

The square root of 77738153 is about 8816.9242369434. The cubic root of 77738153 is about 426.7872198276.

The spelling of 77738153 in words is "seventy-seven million, seven hundred thirty-eight thousand, one hundred fifty-three".