161258478150 has 288 divisors, whose sum is σ = 518316682752. Its totient is φ = 32794540800.

The previous prime is 161258478113. The next prime is 161258478151. The reversal of 161258478150 is 51874852161.

It is a self number, because there is not a number n which added to its sum of digits gives 161258478150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161258478151) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3778732 + ... + 3821168.

It is an arithmetic number, because the mean of its divisors is an integer number (1799710704).

Almost surely, 2^161258478150 is an apocalyptic number.

161258478150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161258478150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259158341376).

161258478150 is an abundant number, since it is smaller than the sum of its proper divisors (357058204602).

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

161258478150 is a wasteful number, since it uses less digits than its factorization.

161258478150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42524 (or 42512 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 161258478150 in words is "one hundred sixty-one billion, two hundred fifty-eight million, four hundred seventy-eight thousand, one hundred fifty".