4161540512250 has 192 divisors, whose sum is σ = 12286428126336. Its totient is φ = 1007983872000.

The previous prime is 4161540512231. The next prime is 4161540512273. The reversal of 4161540512250 is 522150451614.

4161540512250 is a `hidden beast` number, since 4 + 1 + 61 + 540 + 5 + 1 + 2 + 2 + 50 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28711962 + ... + 28856538.

It is an arithmetic number, because the mean of its divisors is an integer number (63991813158).

Almost surely, 2^{4161540512250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4161540512250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6143214063168).

4161540512250 is an abundant number, since it is smaller than the sum of its proper divisors (8124887614086).

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

4161540512250 is a wasteful number, since it uses less digits than its factorization.

4161540512250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145774 (or 145761 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 4161540512250 its reverse (522150451614), we get a palindrome (4683690963864).

The spelling of 4161540512250 in words is "four trillion, one hundred sixty-one billion, five hundred forty million, five hundred twelve thousand, two hundred fifty".