161683840713 has 8 divisors (see below), whose sum is σ = 226924688800. Its totient is φ = 102116109888.

The previous prime is 161683840711. The next prime is 161683840741. The reversal of 161683840713 is 317048386161.

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

It is not a de Polignac number, because 161683840713 - 2¹ = 161683840711 is a prime.

It is a super-2 number, since 2×161683840713² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161683840711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418279248 + ... + 1418279361.

It is an arithmetic number, because the mean of its divisors is an integer number (28365586100).

Almost surely, 2^161683840713 is an apocalyptic number.

It is an amenable number.

161683840713 is a deficient number, since it is larger than the sum of its proper divisors (65240848087).

161683840713 is a wasteful number, since it uses less digits than its factorization.

161683840713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836558631.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 161683840713 in words is "one hundred sixty-one billion, six hundred eighty-three million, eight hundred forty thousand, seven hundred thirteen".