161345155443 has 16 divisors (see below), whose sum is σ = 217167336576. Its totient is φ = 106543483200.

The previous prime is 161345155429. The next prime is 161345155451. The reversal of 161345155443 is 344551543161.

It is not a de Polignac number, because 161345155443 - 2¹⁰ = 161345154419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161345155395 and 161345155404.

It is not an unprimeable number, because it can be changed into a prime (161345155463) 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, 2612268 + ... + 2673318.

It is an arithmetic number, because the mean of its divisors is an integer number (13572958536).

Almost surely, 2^161345155443 is an apocalyptic number.

161345155443 is a deficient number, since it is larger than the sum of its proper divisors (55822181133).

161345155443 is a wasteful number, since it uses less digits than its factorization.

161345155443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69394.

The product of its digits is 432000, while the sum is 42.

The spelling of 161345155443 in words is "one hundred sixty-one billion, three hundred forty-five million, one hundred fifty-five thousand, four hundred forty-three".