161655761012548 has 24 divisors (see below), whose sum is σ = 308622429652320. Its totient is φ = 73478251869120.

The previous prime is 161655761012491. The next prime is 161655761012563. The reversal of 161655761012548 is 845210167556161.

It is a happy number.

It is a super-2 number, since 2×161655761012548² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161655761012492 and 161655761012501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38991993 + ... + 42938176.

It is an arithmetic number, because the mean of its divisors is an integer number (12859267902180).

Almost surely, 2^{161655761012548} is an apocalyptic number.

It is an amenable number.

161655761012548 is a deficient number, since it is larger than the sum of its proper divisors (146966668639772).

161655761012548 is a wasteful number, since it uses less digits than its factorization.

161655761012548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81975027 (or 81975025 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 58.

The spelling of 161655761012548 in words is "one hundred sixty-one trillion, six hundred fifty-five billion, seven hundred sixty-one million, twelve thousand, five hundred forty-eight".