161156505510301 has 16 divisors (see below), whose sum is σ = 188678408542848. Its totient is φ = 134759752243200.

The previous prime is 161156505510281. The next prime is 161156505510313. The reversal of 161156505510301 is 103015505651161.

It is not a de Polignac number, because 161156505510301 - 2¹¹ = 161156505508253 is a prime.

It is a super-2 number, since 2×161156505510301² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161156505519301) 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, 3617860 + ... + 18313981.

It is an arithmetic number, because the mean of its divisors is an integer number (11792400533928).

Almost surely, 2^{161156505510301} is an apocalyptic number.

It is an amenable number.

161156505510301 is a deficient number, since it is larger than the sum of its proper divisors (27521903032547).

161156505510301 is a wasteful number, since it uses less digits than its factorization.

161156505510301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21957492.

The product of its (nonzero) digits is 67500, while the sum is 40.

The spelling of 161156505510301 in words is "one hundred sixty-one trillion, one hundred fifty-six billion, five hundred five million, five hundred ten thousand, three hundred one".