161503441016642 has 16 divisors (see below), whose sum is σ = 258166462609152. Its totient is φ = 75597355368480.

The previous prime is 161503441016587. The next prime is 161503441016657. The reversal of 161503441016642 is 246610144305161.

It is a super-2 number, since 2×161503441016642² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161503441016593 and 161503441016602.

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, 37350469859 + ... + 37350474182.

It is an arithmetic number, because the mean of its divisors is an integer number (16135403913072).

Almost surely, 2^{161503441016642} is an apocalyptic number.

161503441016642 is a deficient number, since it is larger than the sum of its proper divisors (96663021592510).

161503441016642 is a wasteful number, since it uses less digits than its factorization.

161503441016642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74700944113.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 161503441016642 in words is "one hundred sixty-one trillion, five hundred three billion, four hundred forty-one million, sixteen thousand, six hundred forty-two".