161145452115 has 96 divisors (see below), whose sum is σ = 307118522880. Its totient is φ = 77800808448.

The previous prime is 161145452099. The next prime is 161145452119. The reversal of 161145452115 is 511254541161.

161145452115 is a `hidden beast` number, since 1 + 6 + 114 + 5 + 4 + 521 + 15 = 666.

It is not a de Polignac number, because 161145452115 - 2⁴ = 161145452099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161145452115.

It is not an unprimeable number, because it can be changed into a prime (161145452119) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22080147 + ... + 22087443.

It is an arithmetic number, because the mean of its divisors is an integer number (3199151280).

Almost surely, 2^161145452115 is an apocalyptic number.

161145452115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161145452115 is a deficient number, since it is larger than the sum of its proper divisors (145973070765).

161145452115 is a wasteful number, since it uses less digits than its factorization.

161145452115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8473 (or 8470 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

Adding to 161145452115 its reverse (511254541161), we get a palindrome (672399993276).

The spelling of 161145452115 in words is "one hundred sixty-one billion, one hundred forty-five million, four hundred fifty-two thousand, one hundred fifteen".