61511152232 has 16 divisors (see below), whose sum is σ = 115347768900. Its totient is φ = 30751747200.

The previous prime is 61511152231. The next prime is 61511152243. The reversal of 61511152232 is 23225111516.

It can be written as a sum of positive squares in 2 ways, for example, as 52989277636 + 8521874596 = 230194^2 + 92314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61511152195 and 61511152204.

It is not an unprimeable number, because it can be changed into a prime (61511152231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 409757 + ... + 539372.

Almost surely, 2^61511152232 is an apocalyptic number.

It is an amenable number.

61511152232 is a deficient number, since it is larger than the sum of its proper divisors (53836616668).

61511152232 is a wasteful number, since it uses less digits than its factorization.

61511152232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957236 (or 957232 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

Adding to 61511152232 its reverse (23225111516), we get a palindrome (84736263748).

The spelling of 61511152232 in words is "sixty-one billion, five hundred eleven million, one hundred fifty-two thousand, two hundred thirty-two".