51006065616 has 120 divisors (see below), whose sum is σ = 157328930304. Its totient is φ = 15296993280.

The previous prime is 51006065603. The next prime is 51006065659. The reversal of 51006065616 is 61656060015.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12336 + ... + 319631.

Almost surely, 2^51006065616 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 51006065616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78664465152).

51006065616 is an abundant number, since it is smaller than the sum of its proper divisors (106322864688).

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

51006065616 is a wasteful number, since it uses less digits than its factorization.

51006065616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332089 (or 332080 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 51006065616 in words is "fifty-one billion, six million, sixty-five thousand, six hundred sixteen".