61532434042 has 4 divisors (see below), whose sum is σ = 92298651066. Its totient is φ = 30766217020.

The previous prime is 61532433971. The next prime is 61532434079. The reversal of 61532434042 is 24043423516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57647529801 + 3884904241 = 240099^2 + 62329^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61532433989 and 61532434007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15383108509 + ... + 15383108512.

Almost surely, 2^61532434042 is an apocalyptic number.

61532434042 is a deficient number, since it is larger than the sum of its proper divisors (30766217024).

61532434042 is a wasteful number, since it uses less digits than its factorization.

61532434042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30766217023.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 61532434042 its reverse (24043423516), we get a palindrome (85575857558).

The spelling of 61532434042 in words is "sixty-one billion, five hundred thirty-two million, four hundred thirty-four thousand, forty-two".