161420550530 has 16 divisors (see below), whose sum is σ = 294057679104. Its totient is φ = 63790289520.

The previous prime is 161420550463. The next prime is 161420550581. The reversal of 161420550530 is 35055024161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97240466 + ... + 97242125.

It is an arithmetic number, because the mean of its divisors is an integer number (18378604944).

Almost surely, 2^161420550530 is an apocalyptic number.

161420550530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161420550530 is a deficient number, since it is larger than the sum of its proper divisors (132637128574).

161420550530 is a wasteful number, since it uses less digits than its factorization.

161420550530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194482681.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 161420550530 its reverse (35055024161), we get a palindrome (196475574691).

The spelling of 161420550530 in words is "one hundred sixty-one billion, four hundred twenty million, five hundred fifty thousand, five hundred thirty".