161502039216 has 300 divisors, whose sum is σ = 567395885232. Its totient is φ = 44136804096.

The previous prime is 161502039197. The next prime is 161502039217. The reversal of 161502039216 is 612930205161.

161502039216 is a `hidden beast` number, since 1 + 61 + 502 + 0 + 3 + 92 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (161502039217) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1405306 + ... + 1515878.

Almost surely, 2^161502039216 is an apocalyptic number.

161502039216 is a gapful number since it is divisible by the number (16) 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 161502039216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283697942616).

161502039216 is an abundant number, since it is smaller than the sum of its proper divisors (405893846016).

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

161502039216 is a wasteful number, since it uses less digits than its factorization.

161502039216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110630 (or 110608 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 161502039216 in words is "one hundred sixty-one billion, five hundred two million, thirty-nine thousand, two hundred sixteen".