161650050954 has 64 divisors (see below), whose sum is σ = 374274680832. Its totient is φ = 45589896000.

The previous prime is 161650050953. The next prime is 161650050971. The reversal of 161650050954 is 459050056161.

It is a super-2 number, since 2×161650050954² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161650050953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1346539 + ... + 1461665.

It is an arithmetic number, because the mean of its divisors is an integer number (5848041888).

Almost surely, 2^161650050954 is an apocalyptic number.

161650050954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161650050954 is an abundant number, since it is smaller than the sum of its proper divisors (212624629878).

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

161650050954 is a wasteful number, since it uses less digits than its factorization.

161650050954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115571.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 161650050954 in words is "one hundred sixty-one billion, six hundred fifty million, fifty thousand, nine hundred fifty-four".