628925699969 has 4 divisors (see below), whose sum is σ = 718772228544. Its totient is φ = 539079171396.

The previous prime is 628925699939. The next prime is 628925699999. The reversal of 628925699969 is 969996529826.

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.

It is an interprime number because it is at equal distance from previous prime (628925699939) and next prime (628925699999).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628925699969 is a prime.

It is a super-2 number, since 2×628925699969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628925699893 and 628925699902.

It is not an unprimeable number, because it can be changed into a prime (628925699939) 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 3 ways as a sum of consecutive naturals, for example, 44923264277 + ... + 44923264290.

It is an arithmetic number, because the mean of its divisors is an integer number (179693057136).

Almost surely, 2^628925699969 is an apocalyptic number.

It is an amenable number.

628925699969 is a deficient number, since it is larger than the sum of its proper divisors (89846528575).

628925699969 is an equidigital number, since it uses as much as digits as its factorization.

628925699969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89846528574.

The product of its digits is 2040733440, while the sum is 80.

The spelling of 628925699969 in words is "six hundred twenty-eight billion, nine hundred twenty-five million, six hundred ninety-nine thousand, nine hundred sixty-nine".