161207723342 has 16 divisors (see below), whose sum is σ = 255528948240. Its totient is φ = 76064421888.

The previous prime is 161207723333. The next prime is 161207723357. The reversal of 161207723342 is 243327702161.

It is a super-2 number, since 2×161207723342² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 161207723296 and 161207723305.

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, 8243753 + ... + 8263284.

It is an arithmetic number, because the mean of its divisors is an integer number (15970559265).

Almost surely, 2^161207723342 is an apocalyptic number.

161207723342 is a deficient number, since it is larger than the sum of its proper divisors (94321224898).

161207723342 is a wasteful number, since it uses less digits than its factorization.

161207723342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16507315.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 161207723342 in words is "one hundred sixty-one billion, two hundred seven million, seven hundred twenty-three thousand, three hundred forty-two".