161870687962 has 8 divisors (see below), whose sum is σ = 242821001556. Its totient is φ = 80930354112.

The previous prime is 161870687921. The next prime is 161870688013. The reversal of 161870687962 is 269786078161.

It can be written as a sum of positive squares in 2 ways, for example, as 161812303081 + 58384881 = 402259^2 + 7641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 161870687962.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2454253 + ... + 2519344.

Almost surely, 2^161870687962 is an apocalyptic number.

161870687962 is a deficient number, since it is larger than the sum of its proper divisors (80950313594).

161870687962 is a wasteful number, since it uses less digits than its factorization.

161870687962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989872.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 161870687962 in words is "one hundred sixty-one billion, eight hundred seventy million, six hundred eighty-seven thousand, nine hundred sixty-two".