99983121075 has 36 divisors (see below), whose sum is σ = 179097929608. Its totient is φ = 53319254400.

The previous prime is 99983121059. The next prime is 99983121131. The reversal of 99983121075 is 57012138999.

It is not a de Polignac number, because 99983121075 - 2⁴ = 99983121059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4350615 + ... + 4373535.

Almost surely, 2^99983121075 is an apocalyptic number.

99983121075 is a deficient number, since it is larger than the sum of its proper divisors (79114808533).

99983121075 is a wasteful number, since it uses less digits than its factorization.

99983121075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42324 (or 42316 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The spelling of 99983121075 in words is "ninety-nine billion, nine hundred eighty-three million, one hundred twenty-one thousand, seventy-five".