61306210623 has 16 divisors (see below), whose sum is σ = 94813303040. Its totient is φ = 34509252096.

The previous prime is 61306210549. The next prime is 61306210639. The reversal of 61306210623 is 32601260316.

It is not a de Polignac number, because 61306210623 - 2⁸ = 61306210367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61306210723) 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 15 ways as a sum of consecutive naturals, for example, 21784738 + ... + 21787551.

It is an arithmetic number, because the mean of its divisors is an integer number (5925831440).

Almost surely, 2^61306210623 is an apocalyptic number.

61306210623 is a deficient number, since it is larger than the sum of its proper divisors (33507092417).

61306210623 is a wasteful number, since it uses less digits than its factorization.

61306210623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43572366.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 61306210623 its reverse (32601260316), we get a palindrome (93907470939).

The spelling of 61306210623 in words is "sixty-one billion, three hundred six million, two hundred ten thousand, six hundred twenty-three".