51065088464 has 80 divisors (see below), whose sum is σ = 107495119872. Its totient is φ = 23359847424.

The previous prime is 51065088463. The next prime is 51065088511. The reversal of 51065088464 is 46488056015.

It is a super-2 number, since 2×51065088464² (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 (51065088463) 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, 28010657 + ... + 28012479.

Almost surely, 2^51065088464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51065088464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53747559936).

51065088464 is an abundant number, since it is smaller than the sum of its proper divisors (56430031408).

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

51065088464 is a wasteful number, since it uses less digits than its factorization.

51065088464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964 (or 2958 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 51065088464 in words is "fifty-one billion, sixty-five million, eighty-eight thousand, four hundred sixty-four".