61500416443 has 4 divisors (see below), whose sum is σ = 61591799608. Its totient is φ = 61409033280.

The previous prime is 61500416441. The next prime is 61500416447. The reversal of 61500416443 is 34461400516.

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

It is a cyclic number.

It is not a de Polignac number, because 61500416443 - 2¹ = 61500416441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61500416399 and 61500416408.

It is not an unprimeable number, because it can be changed into a prime (61500416441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45690573 + ... + 45691918.

It is an arithmetic number, because the mean of its divisors is an integer number (15397949902).

Almost surely, 2^61500416443 is an apocalyptic number.

61500416443 is a deficient number, since it is larger than the sum of its proper divisors (91383165).

61500416443 is an equidigital number, since it uses as much as digits as its factorization.

61500416443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91383164.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 61500416443 its reverse (34461400516), we get a palindrome (95961816959).

The spelling of 61500416443 in words is "sixty-one billion, five hundred million, four hundred sixteen thousand, four hundred forty-three".