628127551633 has 4 divisors (see below), whose sum is σ = 628129952740. Its totient is φ = 628125150528.

The previous prime is 628127551609. The next prime is 628127551661. The reversal of 628127551633 is 336155721826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 285660318784 + 342467232849 = 534472^2 + 585207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628127551633 is a prime.

It is a super-2 number, since 2×628127551633² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628127554633) 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, 752388 + ... + 1349941.

It is an arithmetic number, because the mean of its divisors is an integer number (157032488185).

Almost surely, 2^628127551633 is an apocalyptic number.

It is an amenable number.

628127551633 is a deficient number, since it is larger than the sum of its proper divisors (2401107).

628127551633 is a wasteful number, since it uses less digits than its factorization.

628127551633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401106.

The product of its digits is 1814400, while the sum is 49.

The spelling of 628127551633 in words is "six hundred twenty-eight billion, one hundred twenty-seven million, five hundred fifty-one thousand, six hundred thirty-three".