628869930853 has 4 divisors (see below), whose sum is σ = 633821662720. Its totient is φ = 623918198988.

The previous prime is 628869930839. The next prime is 628869930881. The reversal of 628869930853 is 358039968826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 358039968826 = 2 ⋅179019984413.

It is a cyclic number.

It is not a de Polignac number, because 628869930853 - 2⁹ = 628869930341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628869930803) 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, 2475865743 + ... + 2475865996.

It is an arithmetic number, because the mean of its divisors is an integer number (158455415680).

Almost surely, 2^628869930853 is an apocalyptic number.

It is an amenable number.

628869930853 is a deficient number, since it is larger than the sum of its proper divisors (4951731867).

628869930853 is a wasteful number, since it uses less digits than its factorization.

628869930853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951731866.

The product of its (nonzero) digits is 134369280, while the sum is 67.

The spelling of 628869930853 in words is "six hundred twenty-eight billion, eight hundred sixty-nine million, nine hundred thirty thousand, eight hundred fifty-three".