161613648141 has 16 divisors (see below), whose sum is σ = 235082373120. Its totient is φ = 97944342320.

The previous prime is 161613648137. The next prime is 161613648191. The reversal of 161613648141 is 141846316161.

It is not a de Polignac number, because 161613648141 - 2² = 161613648137 is a prime.

It is a super-2 number, since 2×161613648141² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161613648093 and 161613648102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161613648191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1200070 + ... + 1327928.

It is an arithmetic number, because the mean of its divisors is an integer number (14692648320).

Almost surely, 2^161613648141 is an apocalyptic number.

161613648141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161613648141 is a deficient number, since it is larger than the sum of its proper divisors (73468724979).

161613648141 is a wasteful number, since it uses less digits than its factorization.

161613648141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166176.

The product of its digits is 82944, while the sum is 42.

The spelling of 161613648141 in words is "one hundred sixty-one billion, six hundred thirteen million, six hundred forty-eight thousand, one hundred forty-one".