51644992189350 has 384 divisors, whose sum is σ = 157409285160960. Its totient is φ = 10941837972480.

The previous prime is 51644992189327. The next prime is 51644992189379. The reversal of 51644992189350 is 5398129944615.

It is a happy number.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3819041689 + ... + 3819055211.

It is an arithmetic number, because the mean of its divisors is an integer number (409920013440).

Almost surely, 2^{51644992189350} is an apocalyptic number.

51644992189350 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 51644992189350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78704642580480).

51644992189350 is an abundant number, since it is smaller than the sum of its proper divisors (105764292971610).

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

51644992189350 is a wasteful number, since it uses less digits than its factorization.

51644992189350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17684 (or 17679 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 66.

The spelling of 51644992189350 in words is "fifty-one trillion, six hundred forty-four billion, nine hundred ninety-two million, one hundred eighty-nine thousand, three hundred fifty".