61956237226 has 24 divisors (see below), whose sum is σ = 103352893164. Its totient is φ = 27822337920.

The previous prime is 61956237173. The next prime is 61956237227. The reversal of 61956237226 is 62273265916.

It can be written as a sum of positive squares in 6 ways, for example, as 15116456601 + 46839780625 = 122949^2 + 216425^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61956237226.

It is not an unprimeable number, because it can be changed into a prime (61956237227) 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 11 ways as a sum of consecutive naturals, for example, 2464555 + ... + 2489566.

Almost surely, 2^61956237226 is an apocalyptic number.

61956237226 is a deficient number, since it is larger than the sum of its proper divisors (41396655938).

61956237226 is a wasteful number, since it uses less digits than its factorization.

61956237226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954186 (or 4954173 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The spelling of 61956237226 in words is "sixty-one billion, nine hundred fifty-six million, two hundred thirty-seven thousand, two hundred twenty-six".