1628573622249 has 32 divisors (see below), whose sum is σ = 2614777876480. Its totient is φ = 880780148352.

The previous prime is 1628573622241. The next prime is 1628573622251. The reversal of 1628573622249 is 9422263758261.

It is not a de Polignac number, because 1628573622249 - 2³ = 1628573622241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (1628573622241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1563457 + ... + 2387790.

It is an arithmetic number, because the mean of its divisors is an integer number (81711808640).

Almost surely, 2^{1628573622249} is an apocalyptic number.

1628573622249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1628573622249 is a deficient number, since it is larger than the sum of its proper divisors (986204254231).

1628573622249 is a wasteful number, since it uses less digits than its factorization.

1628573622249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952309.

The product of its digits is 17418240, while the sum is 57.

The spelling of 1628573622249 in words is "one trillion, six hundred twenty-eight billion, five hundred seventy-three million, six hundred twenty-two thousand, two hundred forty-nine".