161351180770 has 32 divisors (see below), whose sum is σ = 313076099952. Its totient is φ = 59518098432.

The previous prime is 161351180741. The next prime is 161351180797. The reversal of 161351180770 is 77081153161.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 64319553769 + 97031627001 = 253613^2 + 311499^2 .

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 15 ways as a sum of consecutive naturals, for example, 466467 + ... + 735046.

Almost surely, 2^161351180770 is an apocalyptic number.

161351180770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161351180770 is a deficient number, since it is larger than the sum of its proper divisors (151724919182).

161351180770 is a wasteful number, since it uses less digits than its factorization.

161351180770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202566.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 161351180770 in words is "one hundred sixty-one billion, three hundred fifty-one million, one hundred eighty thousand, seven hundred seventy".