5851372319521 has 9 divisors (see below), whose sum is σ = 6046292588049. Its totient is φ = 5662545804900.

The previous prime is 5851372319449. The next prime is 5851372319561. The reversal of 5851372319521 is 1259132731585.

The square root of 5851372319521 is 2418961.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 5851372319521 - 2¹¹ = 5851372317473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5851372319561) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 74948776 + ... + 75026806.

It is an arithmetic number, because the mean of its divisors is an integer number (671810287561).

Almost surely, 2^{5851372319521} is an apocalyptic number.

5851372319521 is the 2418961-st square number.

5851372319521 is the 1209481-st centered octagonal number.

It is an amenable number.

5851372319521 is a deficient number, since it is larger than the sum of its proper divisors (194920268528).

5851372319521 is an frugal number, since it uses more digits than its factorization.

5851372319521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156124 (or 78062 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 52.

The spelling of 5851372319521 in words is "five trillion, eight hundred fifty-one billion, three hundred seventy-two million, three hundred nineteen thousand, five hundred twenty-one".