161012423632 has 10 divisors (see below), whose sum is σ = 311961570818. Its totient is φ = 80506211808.

The previous prime is 161012423599. The next prime is 161012423683. The reversal of 161012423632 is 236324210161.

It can be written as a sum of positive squares in only one way, i.e., 149889768336 + 11122655296 = 387156^2 + 105464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161012423594 and 161012423603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5031638223 + ... + 5031638254.

Almost surely, 2^161012423632 is an apocalyptic number.

It is an amenable number.

161012423632 is a deficient number, since it is larger than the sum of its proper divisors (150949147186).

161012423632 is a wasteful number, since it uses less digits than its factorization.

161012423632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10063276485 (or 10063276479 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 161012423632 its reverse (236324210161), we get a palindrome (397336633793).

The spelling of 161012423632 in words is "one hundred sixty-one billion, twelve million, four hundred twenty-three thousand, six hundred thirty-two".