1628775402879 has 16 divisors (see below), whose sum is σ = 2172826288224. Its totient is φ = 1085287526400.

The previous prime is 1628775402871. The next prime is 1628775402887. The reversal of 1628775402879 is 9782045778261.

It is an interprime number because it is at equal distance from previous prime (1628775402871) and next prime (1628775402887).

It is not a de Polignac number, because 1628775402879 - 2³ = 1628775402871 is a prime.

It is a super-2 number, since 2×1628775402879² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628775402871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76310749 + ... + 76332089.

It is an arithmetic number, because the mean of its divisors is an integer number (135801643014).

Almost surely, 2^{1628775402879} is an apocalyptic number.

1628775402879 is a deficient number, since it is larger than the sum of its proper divisors (544050885345).

1628775402879 is a wasteful number, since it uses less digits than its factorization.

1628775402879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33338.

The product of its (nonzero) digits is 94832640, while the sum is 66.

The spelling of 1628775402879 in words is "one trillion, six hundred twenty-eight billion, seven hundred seventy-five million, four hundred two thousand, eight hundred seventy-nine".