51216152306264 has 64 divisors (see below), whose sum is σ = 107212163604480. Its totient is φ = 22735370448000.

The previous prime is 51216152306239. The next prime is 51216152306273. The reversal of 51216152306264 is 46260325161215.

51216152306264 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25171994 + ... + 27130454.

It is an arithmetic number, because the mean of its divisors is an integer number (1675190056320).

Almost surely, 2^{51216152306264} 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 51216152306264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53606081802240).

51216152306264 is an abundant number, since it is smaller than the sum of its proper divisors (55996011298216).

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

51216152306264 is a wasteful number, since it uses less digits than its factorization.

51216152306264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965432 (or 1965428 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

Adding to 51216152306264 its reverse (46260325161215), we get a palindrome (97476477467479).

The spelling of 51216152306264 in words is "fifty-one trillion, two hundred sixteen billion, one hundred fifty-two million, three hundred six thousand, two hundred sixty-four".