1675955121921 has 16 divisors (see below), whose sum is σ = 2502446848000. Its totient is φ = 1108505747664.

The previous prime is 1675955121889. The next prime is 1675955121923. The reversal of 1675955121921 is 1291215595761.

1675955121921 is a `hidden beast` number, since 1 + 6 + 7 + 5 + 95 + 512 + 19 + 21 = 666.

It is not a de Polignac number, because 1675955121921 - 2⁵ = 1675955121889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1675955121923) 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, 244376146 + ... + 244383003.

It is an arithmetic number, because the mean of its divisors is an integer number (156402928000).

Almost surely, 2^{1675955121921} is an apocalyptic number.

It is an amenable number.

1675955121921 is a deficient number, since it is larger than the sum of its proper divisors (826491726079).

1675955121921 is a wasteful number, since it uses less digits than its factorization.

1675955121921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488759285 (or 488759279 counting only the distinct ones).

The product of its digits is 1701000, while the sum is 54.

The spelling of 1675955121921 in words is "one trillion, six hundred seventy-five billion, nine hundred fifty-five million, one hundred twenty-one thousand, nine hundred twenty-one".