771272660251 has 4 divisors (see below), whose sum is σ = 771275603272. Its totient is φ = 771269717232.

The previous prime is 771272660237. The next prime is 771272660261. The reversal of 771272660251 is 152066272177.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 771272660251 - 2⁵ = 771272660219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (771272660261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035306 + ... + 1616911.

It is an arithmetic number, because the mean of its divisors is an integer number (192818900818).

Almost surely, 2^771272660251 is an apocalyptic number.

771272660251 is a deficient number, since it is larger than the sum of its proper divisors (2943021).

771272660251 is a wasteful number, since it uses less digits than its factorization.

771272660251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943020.

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

The spelling of 771272660251 in words is "seven hundred seventy-one billion, two hundred seventy-two million, six hundred sixty thousand, two hundred fifty-one".