51778012810080 has 48 divisors (see below), whose sum is σ = 163100740353264. Its totient is φ = 13807470082560.

The previous prime is 51778012810001. The next prime is 51778012810159. The reversal of 51778012810080 is 8001821087715.

It is an interprime number because it is at equal distance from previous prime (51778012810001) and next prime (51778012810159).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×51778012810080² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53935429531 + ... + 53935430490.

It is an arithmetic number, because the mean of its divisors is an integer number (3397932090693).

Almost surely, 2^{51778012810080} is an apocalyptic number.

It is an amenable number.

51778012810080 is an abundant number, since it is smaller than the sum of its proper divisors (111322727543184).

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

51778012810080 is a wasteful number, since it uses less digits than its factorization.

51778012810080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107870860039 (or 107870860031 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 48.

Adding to 51778012810080 its reverse (8001821087715), we get a palindrome (59779833897795).

The spelling of 51778012810080 in words is "fifty-one trillion, seven hundred seventy-eight billion, twelve million, eight hundred ten thousand, eighty".