161135050072 has 8 divisors (see below), whose sum is σ = 302128218900. Its totient is φ = 80567525032.

The previous prime is 161135050067. The next prime is 161135050079. The reversal of 161135050072 is 270050531161.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161135050079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070940622 + ... + 10070940637.

Almost surely, 2^161135050072 is an apocalyptic number.

It is an amenable number.

161135050072 is a deficient number, since it is larger than the sum of its proper divisors (140993168828).

161135050072 is a wasteful number, since it uses less digits than its factorization.

161135050072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20141881265 (or 20141881261 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The spelling of 161135050072 in words is "one hundred sixty-one billion, one hundred thirty-five million, fifty thousand, seventy-two".