83172521080340 has 48 divisors (see below), whose sum is σ = 184982911520400. Its totient is φ = 31304157837312.

The previous prime is 83172521080331. The next prime is 83172521080361. The reversal of 83172521080340 is 4308012527138.

It can be written as a sum of positive squares in 8 ways, for example, as 248294917264 + 82924226163076 = 498292^2 + 9106274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83172521080291 and 83172521080300.

It is a congruent number.

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, 29306195 + ... + 32018714.

It is an arithmetic number, because the mean of its divisors is an integer number (3853810656675).

Almost surely, 2^{83172521080340} is an apocalyptic number.

It is an amenable number.

83172521080340 is an abundant number, since it is smaller than the sum of its proper divisors (101810390440060).

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

83172521080340 is a wasteful number, since it uses less digits than its factorization.

83172521080340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61328924 (or 61328922 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 83172521080340 in words is "eighty-three trillion, one hundred seventy-two billion, five hundred twenty-one million, eighty thousand, three hundred forty".