161500011100071 has 24 divisors (see below), whose sum is σ = 250491457018224. Its totient is φ = 92285114987520.

The previous prime is 161500011100037. The next prime is 161500011100091. The reversal of 161500011100071 is 170001110005161.

It is not a de Polignac number, because 161500011100071 - 2⁶ = 161500011100007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161500011100091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19366791 + ... + 26421063.

It is an arithmetic number, because the mean of its divisors is an integer number (10437144042426).

Almost surely, 2^{161500011100071} is an apocalyptic number.

161500011100071 is a deficient number, since it is larger than the sum of its proper divisors (88991445918153).

161500011100071 is a wasteful number, since it uses less digits than its factorization.

161500011100071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7210031 (or 7210024 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 24.

The spelling of 161500011100071 in words is "one hundred sixty-one trillion, five hundred billion, eleven million, one hundred thousand, seventy-one".