161519445950 has 48 divisors (see below), whose sum is σ = 305019654576. Its totient is φ = 63622713600.

The previous prime is 161519445931. The next prime is 161519445973. The reversal of 161519445950 is 59544915161.

It is a super-3 number, since 3×161519445950³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2312540 + ... + 2381360.

It is an arithmetic number, because the mean of its divisors is an integer number (6354576137).

Almost surely, 2^161519445950 is an apocalyptic number.

161519445950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161519445950 is a deficient number, since it is larger than the sum of its proper divisors (143500208626).

161519445950 is a wasteful number, since it uses less digits than its factorization.

161519445950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69549 (or 69544 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 161519445950 in words is "one hundred sixty-one billion, five hundred nineteen million, four hundred forty-five thousand, nine hundred fifty".