51149015896 has 16 divisors (see below), whose sum is σ = 104622987240. Its totient is φ = 23249552640.

The previous prime is 51149015891. The next prime is 51149015921. The reversal of 51149015896 is 69851094115.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51149015891) 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 3 ways as a sum of consecutive naturals, for example, 290619321 + ... + 290619496.

Almost surely, 2^51149015896 is an apocalyptic number.

It is an amenable number.

51149015896 is an abundant number, since it is smaller than the sum of its proper divisors (53473971344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51149015896 is a wasteful number, since it uses less digits than its factorization.

51149015896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581238834 (or 581238830 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 49.

The spelling of 51149015896 in words is "fifty-one billion, one hundred forty-nine million, fifteen thousand, eight hundred ninety-six".