161930368209386 has 32 divisors (see below), whose sum is σ = 277967735458560. Its totient is φ = 69305542934400.

The previous prime is 161930368209361. The next prime is 161930368209461. The reversal of 161930368209386 is 683902863039161.

It is a super-2 number, since 2×161930368209386² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105943451 + ... + 107461041.

It is an arithmetic number, because the mean of its divisors is an integer number (8686491733080).

Almost surely, 2^{161930368209386} is an apocalyptic number.

161930368209386 is a deficient number, since it is larger than the sum of its proper divisors (116037367249174).

161930368209386 is a wasteful number, since it uses less digits than its factorization.

161930368209386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527830.

The product of its (nonzero) digits is 60466176, while the sum is 65.

The spelling of 161930368209386 in words is "one hundred sixty-one trillion, nine hundred thirty billion, three hundred sixty-eight million, two hundred nine thousand, three hundred eighty-six".