628686799642 has 16 divisors (see below), whose sum is σ = 1050648734592. Its totient is φ = 279686583520.

The previous prime is 628686799619. The next prime is 628686799649. The reversal of 628686799642 is 246997686826.

It is not an unprimeable number, because it can be changed into a prime (628686799649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304006123 + ... + 304008190.

It is an arithmetic number, because the mean of its divisors is an integer number (65665545912).

Almost surely, 2^628686799642 is an apocalyptic number.

628686799642 is a deficient number, since it is larger than the sum of its proper divisors (421961934950).

628686799642 is a wasteful number, since it uses less digits than its factorization.

628686799642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608014373.

The product of its digits is 752467968, while the sum is 73.

The spelling of 628686799642 in words is "six hundred twenty-eight billion, six hundred eighty-six million, seven hundred ninety-nine thousand, six hundred forty-two".