771712235461 has 2 divisors, whose sum is σ = 771712235462. Its totient is φ = 771712235460.

The previous prime is 771712235419. The next prime is 771712235467. The reversal of 771712235461 is 164532217177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744477334561 + 27234900900 = 862831^2 + 165030^2 .

It is an emirp because it is prime and its reverse (164532217177) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 771712235461 - 2¹⁷ = 771712104389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (771712235467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385856117730 + 385856117731.

It is an arithmetic number, because the mean of its divisors is an integer number (385856117731).

Almost surely, 2^771712235461 is an apocalyptic number.

It is an amenable number.

771712235461 is a deficient number, since it is larger than the sum of its proper divisors (1).

771712235461 is an equidigital number, since it uses as much as digits as its factorization.

771712235461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 46.

The spelling of 771712235461 in words is "seven hundred seventy-one billion, seven hundred twelve million, two hundred thirty-five thousand, four hundred sixty-one".