620164166523 has 8 divisors (see below), whose sum is σ = 902056969536. Its totient is φ = 375857070600.

The previous prime is 620164166509. The next prime is 620164166527. The reversal of 620164166523 is 325661461026.

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

It is not a de Polignac number, because 620164166523 - 2⁴ = 620164166507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620164166527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9396426733 + ... + 9396426798.

It is an arithmetic number, because the mean of its divisors is an integer number (112757121192).

Almost surely, 2^620164166523 is an apocalyptic number.

620164166523 is a deficient number, since it is larger than the sum of its proper divisors (281892803013).

620164166523 is a wasteful number, since it uses less digits than its factorization.

620164166523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18792853545.

The product of its (nonzero) digits is 311040, while the sum is 42.

It can be divided in two parts, 620164 and 166523, that added together give a palindrome (786687).

The spelling of 620164166523 in words is "six hundred twenty billion, one hundred sixty-four million, one hundred sixty-six thousand, five hundred twenty-three".