161137322061 has 8 divisors (see below), whose sum is σ = 221780400384. Its totient is φ = 103959562560.

The previous prime is 161137321979. The next prime is 161137322081. The reversal of 161137322061 is 160223731161.

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

It is not a de Polignac number, because 161137322061 - 2¹⁵ = 161137289293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161137322081) 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, 866329596 + ... + 866329781.

It is an arithmetic number, because the mean of its divisors is an integer number (27722550048).

Almost surely, 2^161137322061 is an apocalyptic number.

It is an amenable number.

161137322061 is a deficient number, since it is larger than the sum of its proper divisors (60643078323).

161137322061 is a wasteful number, since it uses less digits than its factorization.

161137322061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732659411.

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 161137322061 in words is "one hundred sixty-one billion, one hundred thirty-seven million, three hundred twenty-two thousand, sixty-one".