83450399144161 has 21 divisors (see below), whose sum is σ = 97362336485011. Its totient is φ = 71526227827152.

The previous prime is 83450399144149. The next prime is 83450399144201. The reversal of 83450399144161 is 16144199305438.

It is a happy number.

The square root of 83450399144161 is 9135119.

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

It can be written as a sum of positive squares in only one way, i.e., 82650190176225 + 800208967936 = 9091215^2 + 894544^2 .

It is not a de Polignac number, because 83450399144161 - 2¹⁹ = 83450398619873 is a prime.

It is a super-2 number, since 2×83450399144161² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83450399144096 and 83450399144105.

It is not an unprimeable number, because it can be changed into a prime (83450399144131) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 3133332501 + ... + 3133359133.

Almost surely, 2^{83450399144161} is an apocalyptic number.

83450399144161 is the 9135119-th square number.

83450399144161 is the 4567560-th centered octagonal number.

It is an amenable number.

83450399144161 is a deficient number, since it is larger than the sum of its proper divisors (13911937340850).

83450399144161 is an frugal number, since it uses more digits than its factorization.

83450399144161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53308 (or 26640 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 83450399144161 in words is "eighty-three trillion, four hundred fifty billion, three hundred ninety-nine million, one hundred forty-four thousand, one hundred sixty-one".