628399746997434 has 24 divisors (see below), whose sum is σ = 1362868931211840. Its totient is φ = 209261021401608.

The previous prime is 628399746997417. The next prime is 628399746997441. The reversal of 628399746997434 is 434799647993826.

628399746997434 is a `hidden beast` number, since 6 + 2 + 8 + 399 + 74 + 69 + 97 + 4 + 3 + 4 = 666.

It is a super-2 number, since 2×628399746997434² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17130058722 + ... + 17130095405.

It is an arithmetic number, because the mean of its divisors is an integer number (56786205467160).

Almost surely, 2^{628399746997434} is an apocalyptic number.

628399746997434 is an abundant number, since it is smaller than the sum of its proper divisors (734469184214406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628399746997434 is a wasteful number, since it uses less digits than its factorization.

628399746997434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34260155154 (or 34260155151 counting only the distinct ones).

The product of its digits is 106662334464, while the sum is 90.

The spelling of 628399746997434 in words is "six hundred twenty-eight trillion, three hundred ninety-nine billion, seven hundred forty-six million, nine hundred ninety-seven thousand, four hundred thirty-four".