161100500547 has 32 divisors (see below), whose sum is σ = 269641912320. Its totient is φ = 83420457120.

The previous prime is 161100500531. The next prime is 161100500551. The reversal of 161100500547 is 745005001161.

It is not a de Polignac number, because 161100500547 - 2⁴ = 161100500531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161100500507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8768229 + ... + 8786582.

It is an arithmetic number, because the mean of its divisors is an integer number (8426309760).

Almost surely, 2^161100500547 is an apocalyptic number.

161100500547 is a deficient number, since it is larger than the sum of its proper divisors (108541411773).

161100500547 is a wasteful number, since it uses less digits than its factorization.

161100500547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17554863.

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 161100500547 in words is "one hundred sixty-one billion, one hundred million, five hundred thousand, five hundred forty-seven".