51112623638 has 16 divisors (see below), whose sum is σ = 79333428240. Its totient is φ = 24681503616.

The previous prime is 51112623631. The next prime is 51112623649. The reversal of 51112623638 is 83632621115.

It is a happy number.

It is a super-2 number, since 2×51112623638² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51112623631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3331295 + ... + 3346602.

It is an arithmetic number, because the mean of its divisors is an integer number (4958339265).

Almost surely, 2^51112623638 is an apocalyptic number.

51112623638 is a deficient number, since it is larger than the sum of its proper divisors (28220804602).

51112623638 is a wasteful number, since it uses less digits than its factorization.

51112623638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6678031.

The product of its digits is 51840, while the sum is 38.

The spelling of 51112623638 in words is "fifty-one billion, one hundred twelve million, six hundred twenty-three thousand, six hundred thirty-eight".