51672281781567 has 16 divisors (see below), whose sum is σ = 73009844080992. Its totient is φ = 32394828134400.

The previous prime is 51672281781559. The next prime is 51672281781619. The reversal of 51672281781567 is 76518718227615.

It is not a de Polignac number, because 51672281781567 - 2³ = 51672281781559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51672281781498 and 51672281781507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51672281781517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421746408 + ... + 421868909.

It is an arithmetic number, because the mean of its divisors is an integer number (4563115255062).

Almost surely, 2^{51672281781567} is an apocalyptic number.

51672281781567 is a deficient number, since it is larger than the sum of its proper divisors (21337562299425).

51672281781567 is a wasteful number, since it uses less digits than its factorization.

51672281781567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843616538.

The product of its digits is 79027200, while the sum is 66.

The spelling of 51672281781567 in words is "fifty-one trillion, six hundred seventy-two billion, two hundred eighty-one million, seven hundred eighty-one thousand, five hundred sixty-seven".