161826213106 has 8 divisors (see below), whose sum is σ = 242801460720. Its totient is φ = 80892392868.

The previous prime is 161826213103. The next prime is 161826213121. The reversal of 161826213106 is 601312628161.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (161826213103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10347076 + ... + 10362703.

It is an arithmetic number, because the mean of its divisors is an integer number (30350182590).

Almost surely, 2^161826213106 is an apocalyptic number.

161826213106 is a deficient number, since it is larger than the sum of its proper divisors (80975247614).

161826213106 is a wasteful number, since it uses less digits than its factorization.

161826213106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20713688.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 161826213106 in words is "one hundred sixty-one billion, eight hundred twenty-six million, two hundred thirteen thousand, one hundred six".