161575482987 has 12 divisors (see below), whose sum is σ = 233397615360. Its totient is φ = 107712001008.

The previous prime is 161575482983. The next prime is 161575483037. The reversal of 161575482987 is 789284575161.

161575482987 is a `hidden beast` number, since 1 + 6 + 1 + 5 + 7 + 548 + 2 + 9 + 87 = 666.

It is not a de Polignac number, because 161575482987 - 2² = 161575482983 is a prime.

It is a super-2 number, since 2×161575482987² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161575482983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204843 + ... + 604244.

It is an arithmetic number, because the mean of its divisors is an integer number (19449801280).

Almost surely, 2^161575482987 is an apocalyptic number.

161575482987 is a deficient number, since it is larger than the sum of its proper divisors (71822132373).

161575482987 is a wasteful number, since it uses less digits than its factorization.

161575482987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831282 (or 831279 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 63.

The spelling of 161575482987 in words is "one hundred sixty-one billion, five hundred seventy-five million, four hundred eighty-two thousand, nine hundred eighty-seven".