51861627367 has 8 divisors (see below), whose sum is σ = 56578021632. Its totient is φ = 47145516600.

The previous prime is 51861627361. The next prime is 51861627379. The reversal of 51861627367 is 76372616815.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51861627367 - 2⁷ = 51861627239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51861627361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542392 + ... + 630802.

It is an arithmetic number, because the mean of its divisors is an integer number (7072252704).

Almost surely, 2^51861627367 is an apocalyptic number.

51861627367 is a deficient number, since it is larger than the sum of its proper divisors (4716394265).

51861627367 is a wasteful number, since it uses less digits than its factorization.

51861627367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141749.

The product of its digits is 2540160, while the sum is 52.

The spelling of 51861627367 in words is "fifty-one billion, eight hundred sixty-one million, six hundred twenty-seven thousand, three hundred sixty-seven".