51380772665267 has 4 divisors (see below), whose sum is σ = 51384960530880. Its totient is φ = 51376584799656.

The previous prime is 51380772665239. The next prime is 51380772665279. The reversal of 51380772665267 is 76256627708315.

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 51380772665267 - 2¹⁶ = 51380772599731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51380772667267) 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, 2093914403 + ... + 2093938940.

It is an arithmetic number, because the mean of its divisors is an integer number (12846240132720).

Almost surely, 2^{51380772665267} is an apocalyptic number.

51380772665267 is a deficient number, since it is larger than the sum of its proper divisors (4187865613).

51380772665267 is a wasteful number, since it uses less digits than its factorization.

51380772665267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187865612.

The product of its (nonzero) digits is 177811200, while the sum is 65.

The spelling of 51380772665267 in words is "fifty-one trillion, three hundred eighty billion, seven hundred seventy-two million, six hundred sixty-five thousand, two hundred sixty-seven".