52857811489950 has 240 divisors, whose sum is σ = 147105388045440. Its totient is φ = 14072499360000.

The previous prime is 52857811489939. The next prime is 52857811489963. The reversal of 52857811489950 is 5998411875825.

52857811489950 is a `hidden beast` number, since 5 + 2 + 8 + 57 + 8 + 1 + 1 + 489 + 95 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 10362242400 + ... + 10362247500.

It is an arithmetic number, because the mean of its divisors is an integer number (612939116856).

Almost surely, 2^{52857811489950} is an apocalyptic number.

52857811489950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 52857811489950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73552694022720).

52857811489950 is an abundant number, since it is smaller than the sum of its proper divisors (94247576555490).

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

52857811489950 is a wasteful number, since it uses less digits than its factorization.

52857811489950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8785 (or 8771 counting only the distinct ones).

The product of its (nonzero) digits is 290304000, while the sum is 72.

The spelling of 52857811489950 in words is "fifty-two trillion, eight hundred fifty-seven billion, eight hundred eleven million, four hundred eighty-nine thousand, nine hundred fifty".