770506021457 has 2 divisors, whose sum is σ = 770506021458. Its totient is φ = 770506021456.

The previous prime is 770506021409. The next prime is 770506021499. The reversal of 770506021457 is 754120605077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501265416001 + 269240605456 = 708001^2 + 518884^2 .

It is a cyclic number.

It is not a de Polignac number, because 770506021457 - 2¹⁸ = 770505759313 is a prime.

It is not a weakly prime, because it can be changed into another prime (770506021757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385253010728 + 385253010729.

It is an arithmetic number, because the mean of its divisors is an integer number (385253010729).

Almost surely, 2^770506021457 is an apocalyptic number.

It is an amenable number.

770506021457 is a deficient number, since it is larger than the sum of its proper divisors (1).

770506021457 is an equidigital number, since it uses as much as digits as its factorization.

770506021457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 770506021457 in words is "seven hundred seventy billion, five hundred six million, twenty-one thousand, four hundred fifty-seven".