172776055345 has 8 divisors (see below), whose sum is σ = 207793031400. Its totient is φ = 137913000960.

The previous prime is 172776055259. The next prime is 172776055349. The reversal of 172776055345 is 543550677271.

It can be written as a sum of positive squares in 4 ways, for example, as 41059322161 + 131716733184 = 202631^2 + 362928^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172776055345 - 2²¹ = 172773958193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172776055292 and 172776055301.

It is not an unprimeable number, because it can be changed into a prime (172776055349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38477946 + ... + 38482435.

It is an arithmetic number, because the mean of its divisors is an integer number (25974128925).

Almost surely, 2^172776055345 is an apocalyptic number.

It is an amenable number.

172776055345 is a deficient number, since it is larger than the sum of its proper divisors (35016976055).

172776055345 is an equidigital number, since it uses as much as digits as its factorization.

172776055345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76960835.

The product of its (nonzero) digits is 6174000, while the sum is 52.

The spelling of 172776055345 in words is "one hundred seventy-two billion, seven hundred seventy-six million, fifty-five thousand, three hundred forty-five".