51567141638 has 4 divisors (see below), whose sum is σ = 77350712460. Its totient is φ = 25783570818.

The previous prime is 51567141589. The next prime is 51567141643. The reversal of 51567141638 is 83614176515.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 51567141592 and 51567141601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12891785408 + ... + 12891785411.

It is an arithmetic number, because the mean of its divisors is an integer number (19337678115).

Almost surely, 2^51567141638 is an apocalyptic number.

51567141638 is a deficient number, since it is larger than the sum of its proper divisors (25783570822).

51567141638 is a wasteful number, since it uses less digits than its factorization.

51567141638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25783570821.

The product of its digits is 604800, while the sum is 47.

The spelling of 51567141638 in words is "fifty-one billion, five hundred sixty-seven million, one hundred forty-one thousand, six hundred thirty-eight".