61160433381 has 6 divisors (see below), whose sum is σ = 88342848230. Its totient is φ = 40773622248.

The previous prime is 61160433331. The next prime is 61160433437. The reversal of 61160433381 is 18333406116.

61160433381 is a `hidden beast` number, since 6 + 11 + 604 + 3 + 3 + 38 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50823644481 + 10336788900 = 225441^2 + 101670^2 .

It is not a de Polignac number, because 61160433381 - 2¹¹ = 61160431333 is a prime.

It is a super-2 number, since 2×61160433381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61160433331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3397801846 + ... + 3397801863.

Almost surely, 2^61160433381 is an apocalyptic number.

It is an amenable number.

61160433381 is a deficient number, since it is larger than the sum of its proper divisors (27182414849).

61160433381 is a wasteful number, since it uses less digits than its factorization.

61160433381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6795603715 (or 6795603712 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 61160433381 its reverse (18333406116), we get a palindrome (79493839497).

The spelling of 61160433381 in words is "sixty-one billion, one hundred sixty million, four hundred thirty-three thousand, three hundred eighty-one".