61673763243 has 16 divisors (see below), whose sum is σ = 83477378816. Its totient is φ = 40493265120.

The previous prime is 61673763211. The next prime is 61673763269. The reversal of 61673763243 is 34236737616.

It is not a de Polignac number, because 61673763243 - 2⁵ = 61673763211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61673763192 and 61673763201.

It is not an unprimeable number, because it can be changed into a prime (61673763143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954213 + ... + 1016793.

It is an arithmetic number, because the mean of its divisors is an integer number (5217336176).

Almost surely, 2^61673763243 is an apocalyptic number.

61673763243 is a deficient number, since it is larger than the sum of its proper divisors (21803615573).

61673763243 is a wasteful number, since it uses less digits than its factorization.

61673763243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67554.

The product of its digits is 2286144, while the sum is 48.

The spelling of 61673763243 in words is "sixty-one billion, six hundred seventy-three million, seven hundred sixty-three thousand, two hundred forty-three".