161430504401650 has 384 divisors, whose sum is σ = 352194708096000. Its totient is φ = 54509884416000.

The previous prime is 161430504401599. The next prime is 161430504401681. The reversal of 161430504401650 is 56104405034161.

It is a super-2 number, since 2×161430504401650² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7184576616 + ... + 7184599084.

It is an arithmetic number, because the mean of its divisors is an integer number (917173719000).

Almost surely, 2^{161430504401650} is an apocalyptic number.

161430504401650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161430504401650 is an abundant number, since it is smaller than the sum of its proper divisors (190764203694350).

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

161430504401650 is a wasteful number, since it uses less digits than its factorization.

161430504401650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22758 (or 22753 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 161430504401650 in words is "one hundred sixty-one trillion, four hundred thirty billion, five hundred four million, four hundred one thousand, six hundred fifty".