771900234997 has 4 divisors (see below), whose sum is σ = 771903082720. Its totient is φ = 771897387276.

The previous prime is 771900234979. The next prime is 771900235013. The reversal of 771900234997 is 799432009177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799432009177 = 25409 ⋅31462553.

It is a cyclic number.

It is not a de Polignac number, because 771900234997 - 2¹¹ = 771900232949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771900234977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968793 + ... + 1575550.

It is an arithmetic number, because the mean of its divisors is an integer number (192975770680).

Almost surely, 2^771900234997 is an apocalyptic number.

It is an amenable number.

771900234997 is a deficient number, since it is larger than the sum of its proper divisors (2847723).

771900234997 is a wasteful number, since it uses less digits than its factorization.

771900234997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847722.

The product of its (nonzero) digits is 6001128, while the sum is 58.

The spelling of 771900234997 in words is "seven hundred seventy-one billion, nine hundred million, two hundred thirty-four thousand, nine hundred ninety-seven".