161142716445 has 16 divisors (see below), whose sum is σ = 263314056960. Its totient is φ = 84114211904.

The previous prime is 161142716411. The next prime is 161142716509. The reversal of 161142716445 is 544617241161.

It is a cyclic number.

It is not a de Polignac number, because 161142716445 - 2²¹ = 161140619293 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161142716397 and 161142716406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114284910 + ... + 114286319.

It is an arithmetic number, because the mean of its divisors is an integer number (16457128560).

Almost surely, 2^161142716445 is an apocalyptic number.

161142716445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161142716445 is a deficient number, since it is larger than the sum of its proper divisors (102171340515).

161142716445 is a wasteful number, since it uses less digits than its factorization.

161142716445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228571284.

The product of its digits is 161280, while the sum is 42.

The spelling of 161142716445 in words is "one hundred sixty-one billion, one hundred forty-two million, seven hundred sixteen thousand, four hundred forty-five".