161450005541292 has 288 divisors, whose sum is σ = 444864900480000. Its totient is φ = 49073816563200.

The previous prime is 161450005541267. The next prime is 161450005541299. The reversal of 161450005541292 is 292145500054161.

161450005541292 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 5 + 0 + 0 + 0 + 554 + 1 + 2 + 92 = 666.

It is a super-2 number, since 2×161450005541292² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161450005541299) 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, 26247762417 + ... + 26247768567.

Almost surely, 2^{161450005541292} is an apocalyptic number.

161450005541292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161450005541292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222432450240000).

161450005541292 is an abundant number, since it is smaller than the sum of its proper divisors (283414894938708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161450005541292 is a wasteful number, since it uses less digits than its factorization.

161450005541292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7741 (or 7736 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 161450005541292 in words is "one hundred sixty-one trillion, four hundred fifty billion, five million, five hundred forty-one thousand, two hundred ninety-two".