161012033696 has 48 divisors (see below), whose sum is σ = 323825289480. Its totient is φ = 78784097280.

The previous prime is 161012033671. The next prime is 161012033713. The reversal of 161012033696 is 696330210161.

It can be written as a sum of positive squares in 4 ways, for example, as 161009587600 + 2446096 = 401260^2 + 1564^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175190 + ... + 593898.

Almost surely, 2^161012033696 is an apocalyptic number.

161012033696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161012033696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161912644740).

161012033696 is an abundant number, since it is smaller than the sum of its proper divisors (162813255784).

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

161012033696 is a wasteful number, since it uses less digits than its factorization.

161012033696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418977 (or 418969 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 161012033696 in words is "one hundred sixty-one billion, twelve million, thirty-three thousand, six hundred ninety-six".