161145406790 has 8 divisors (see below), whose sum is σ = 290061732240. Its totient is φ = 64458162712.

The previous prime is 161145406789. The next prime is 161145406867. The reversal of 161145406790 is 97604541161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8057270330 + ... + 8057270349.

It is an arithmetic number, because the mean of its divisors is an integer number (36257716530).

Almost surely, 2^161145406790 is an apocalyptic number.

161145406790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161145406790 is a deficient number, since it is larger than the sum of its proper divisors (128916325450).

161145406790 is a wasteful number, since it uses less digits than its factorization.

161145406790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16114540686.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 161145406790 in words is "one hundred sixty-one billion, one hundred forty-five million, four hundred six thousand, seven hundred ninety".