161902776146 has 16 divisors (see below), whose sum is σ = 248042373120. Its totient is φ = 79222278240.

The previous prime is 161902776127. The next prime is 161902776221. The reversal of 161902776146 is 641677209161.

It is a happy number.

It is a super-2 number, since 2×161902776146² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161902776094 and 161902776103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1144751 + ... + 1278381.

It is an arithmetic number, because the mean of its divisors is an integer number (15502648320).

Almost surely, 2^161902776146 is an apocalyptic number.

161902776146 is a deficient number, since it is larger than the sum of its proper divisors (86139596974).

161902776146 is a wasteful number, since it uses less digits than its factorization.

161902776146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146569.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 161902776146 in words is "one hundred sixty-one billion, nine hundred two million, seven hundred seventy-six thousand, one hundred forty-six".