51961058982 has 128 divisors (see below), whose sum is σ = 142298956800. Its totient is φ = 13721529600.

The previous prime is 51961058957. The next prime is 51961058987. The reversal of 51961058982 is 28985016915.

51961058982 is a `hidden beast` number, since 5 + 19 + 610 + 5 + 8 + 9 + 8 + 2 = 666.

51961058982 is digitally balanced in base 2, 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 (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51961058987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 206232 + ... + 382692.

It is an arithmetic number, because the mean of its divisors is an integer number (1111710600).

Almost surely, 2^51961058982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51961058982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71149478400).

51961058982 is an abundant number, since it is smaller than the sum of its proper divisors (90337897818).

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

51961058982 is a wasteful number, since it uses less digits than its factorization.

51961058982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176539 (or 176533 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 54.

The spelling of 51961058982 in words is "fifty-one billion, nine hundred sixty-one million, fifty-eight thousand, nine hundred eighty-two".