51020950968 has 384 divisors, whose sum is σ = 162279936000. Its totient is φ = 14351800320.

The previous prime is 51020950963. The next prime is 51020950969. The reversal of 51020950968 is 86905902015.

51020950968 is a `hidden beast` number, since 510 + 20 + 9 + 50 + 9 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020950963) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59395323 + ... + 59396181.

It is an arithmetic number, because the mean of its divisors is an integer number (422604000).

Almost surely, 2^51020950968 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 51020950968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81139968000).

51020950968 is an abundant number, since it is smaller than the sum of its proper divisors (111258985032).

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

51020950968 is a wasteful number, since it uses less digits than its factorization.

51020950968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 51020950968 in words is "fifty-one billion, twenty million, nine hundred fifty thousand, nine hundred sixty-eight".