77006334437 has 2 divisors, whose sum is σ = 77006334438. Its totient is φ = 77006334436.

The previous prime is 77006334421. The next prime is 77006334463. The reversal of 77006334437 is 73443360077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71713626436 + 5292708001 = 267794^2 + 72751^2 .

It is a cyclic number.

It is not a de Polignac number, because 77006334437 - 2⁴ = 77006334421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77006334467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38503167218 + 38503167219.

It is an arithmetic number, because the mean of its divisors is an integer number (38503167219).

Almost surely, 2^77006334437 is an apocalyptic number.

It is an amenable number.

77006334437 is a deficient number, since it is larger than the sum of its proper divisors (1).

77006334437 is an equidigital number, since it uses as much as digits as its factorization.

77006334437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 44.

The spelling of 77006334437 in words is "seventy-seven billion, six million, three hundred thirty-four thousand, four hundred thirty-seven".