7172982305 has 4 divisors (see below), whose sum is σ = 8607578772. Its totient is φ = 5738385840.

The previous prime is 7172982301. The next prime is 7172982367. The reversal of 7172982305 is 5032892717.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5032892717 = 28057 ⋅179381.

It can be written as a sum of positive squares in 2 ways, for example, as 4998065809 + 2174916496 = 70697^2 + 46636^2 .

It is not a de Polignac number, because 7172982305 - 2² = 7172982301 is a prime.

It is a super-3 number, since 3×7172982305³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7172982301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717298226 + ... + 717298235.

It is an arithmetic number, because the mean of its divisors is an integer number (2151894693).

Almost surely, 2^7172982305 is an apocalyptic number.

It is an amenable number.

7172982305 is a deficient number, since it is larger than the sum of its proper divisors (1434596467).

7172982305 is a wasteful number, since it uses less digits than its factorization.

7172982305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434596466.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 7172982305 is about 84693.4608160512. The cubic root of 7172982305 is about 1928.5604364427.

The spelling of 7172982305 in words is "seven billion, one hundred seventy-two million, nine hundred eighty-two thousand, three hundred five".