161063632772 has 48 divisors (see below), whose sum is σ = 333925538688. Its totient is φ = 66533944320.

The previous prime is 161063632753. The next prime is 161063632801. The reversal of 161063632772 is 277236360161.

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, 615629 + ... + 837332.

It is an arithmetic number, because the mean of its divisors is an integer number (6956782056).

Almost surely, 2^161063632772 is an apocalyptic number.

It is an amenable number.

161063632772 is an abundant number, since it is smaller than the sum of its proper divisors (172861905916).

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

161063632772 is a wasteful number, since it uses less digits than its factorization.

161063632772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453116 (or 1453114 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 161063632772 in words is "one hundred sixty-one billion, sixty-three million, six hundred thirty-two thousand, seven hundred seventy-two".