161793930736 has 40 divisors (see below), whose sum is σ = 331113204224. Its totient is φ = 76466738880.

The previous prime is 161793930677. The next prime is 161793930757. The reversal of 161793930736 is 637039397161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3771666 + ... + 3814321.

Almost surely, 2^161793930736 is an apocalyptic number.

161793930736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161793930736 is an abundant number, since it is smaller than the sum of its proper divisors (169319273488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161793930736 is a wasteful number, since it uses less digits than its factorization.

161793930736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7586069 (or 7586063 counting only the distinct ones).

The product of its (nonzero) digits is 3857868, while the sum is 55.

The spelling of 161793930736 in words is "one hundred sixty-one billion, seven hundred ninety-three million, nine hundred thirty thousand, seven hundred thirty-six".