161506141263 has 12 divisors (see below), whose sum is σ = 234575527368. Its totient is φ = 107075893680.

The previous prime is 161506141259. The next prime is 161506141271. The reversal of 161506141263 is 362141605161.

161506141263 is a `hidden beast` number, since 1 + 6 + 1 + 506 + 141 + 2 + 6 + 3 = 666.

It is not a de Polignac number, because 161506141263 - 2² = 161506141259 is a prime.

It is a super-2 number, since 2×161506141263² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161506141273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49570545 + ... + 49573802.

It is an arithmetic number, because the mean of its divisors is an integer number (19547960614).

Almost surely, 2^161506141263 is an apocalyptic number.

161506141263 is a deficient number, since it is larger than the sum of its proper divisors (73069386105).

161506141263 is a wasteful number, since it uses less digits than its factorization.

161506141263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99144534 (or 99144531 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 161506141263 in words is "one hundred sixty-one billion, five hundred six million, one hundred forty-one thousand, two hundred sixty-three".