5161821542250 has 32 divisors (see below), whose sum is σ = 12883906571328. Its totient is φ = 1376485744400.

The previous prime is 5161821542243. The next prime is 5161821542309. The reversal of 5161821542250 is 522451281615.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3441213612 + ... + 3441215111.

It is an arithmetic number, because the mean of its divisors is an integer number (402622080354).

Almost surely, 2^{5161821542250} is an apocalyptic number.

5161821542250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5161821542250 is an abundant number, since it is smaller than the sum of its proper divisors (7722085029078).

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

5161821542250 is a wasteful number, since it uses less digits than its factorization.

5161821542250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882428743 (or 6882428733 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 5161821542250 in words is "five trillion, one hundred sixty-one billion, eight hundred twenty-one million, five hundred forty-two thousand, two hundred fifty".