1628640461475 has 36 divisors (see below), whose sum is σ = 3070606351800. Its totient is φ = 822892020480.

The previous prime is 1628640461447. The next prime is 1628640461509. The reversal of 1628640461475 is 5741640468261.

1628640461475 is a `hidden beast` number, since 1 + 62 + 86 + 4 + 0 + 461 + 47 + 5 = 666.

It is not a de Polignac number, because 1628640461475 - 2⁷ = 1628640461347 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 190479990 + ... + 190488539.

Almost surely, 2^{1628640461475} is an apocalyptic number.

1628640461475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1628640461475 is a deficient number, since it is larger than the sum of its proper divisors (1441965890325).

1628640461475 is a wasteful number, since it uses less digits than its factorization.

1628640461475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380968564 (or 380968556 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 1628640461475 in words is "one trillion, six hundred twenty-eight billion, six hundred forty million, four hundred sixty-one thousand, four hundred seventy-five".