61169136 has 80 divisors (see below), whose sum is σ = 181488384. Its totient is φ = 17390592.

The previous prime is 61169099. The next prime is 61169159. The reversal of 61169136 is 63196116.

It is a junction number, because it is equal to n+sod(n) for n = 61169097 and 61169106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102856 + ... + 103448.

Almost surely, 2^61169136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61169136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90744192).

61169136 is an abundant number, since it is smaller than the sum of its proper divisors (120319248).

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

61169136 is a wasteful number, since it uses less digits than its factorization.

61169136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 912 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 61169136 is about 7821.0700035225. The cubic root of 61169136 is about 394.0132095514.

The spelling of 61169136 in words is "sixty-one million, one hundred sixty-nine thousand, one hundred thirty-six".