51010611678 has 80 divisors (see below), whose sum is σ = 123184224240. Its totient is φ = 15684067584.

The previous prime is 51010611629. The next prime is 51010611683. The reversal of 51010611678 is 87611601015.

51010611678 is a `hidden beast` number, since 510 + 1 + 0 + 61 + 16 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3127701 + ... + 3143967.

It is an arithmetic number, because the mean of its divisors is an integer number (1539802803).

Almost surely, 2^51010611678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51010611678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61592112120).

51010611678 is an abundant number, since it is smaller than the sum of its proper divisors (72173612562).

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

51010611678 is a wasteful number, since it uses less digits than its factorization.

51010611678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17783 (or 17774 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 51010611678 in words is "fifty-one billion, ten million, six hundred eleven thousand, six hundred seventy-eight".