620172650621273 has 4 divisors (see below), whose sum is σ = 625660904166708. Its totient is φ = 614684397075840.

The previous prime is 620172650621257. The next prime is 620172650621323. The reversal of 620172650621273 is 372126056271026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45288014151769 + 574884636469504 = 6729637^2 + 23976752^2 .

It is a cyclic number.

It is not a de Polignac number, because 620172650621273 - 2⁴ = 620172650621257 is a prime.

It is a super-2 number, since 2×620172650621273² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620172650621473) 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, 2744126772548 + ... + 2744126772773.

It is an arithmetic number, because the mean of its divisors is an integer number (156415226041677).

Almost surely, 2^{620172650621273} is an apocalyptic number.

It is an amenable number.

620172650621273 is a deficient number, since it is larger than the sum of its proper divisors (5488253545435).

620172650621273 is a wasteful number, since it uses less digits than its factorization.

620172650621273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5488253545434.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 620172650621273 in words is "six hundred twenty trillion, one hundred seventy-two billion, six hundred fifty million, six hundred twenty-one thousand, two hundred seventy-three".