61646023426 has 8 divisors (see below), whose sum is σ = 99582037884. Its totient is φ = 28452010800.

The previous prime is 61646023423. The next prime is 61646023499. The reversal of 61646023426 is 62432064616.

It can be written as a sum of positive squares in 2 ways, for example, as 61511440225 + 134583201 = 248015^2 + 11601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61646023423) 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 3 ways as a sum of consecutive naturals, for example, 1185500425 + ... + 1185500476.

Almost surely, 2^61646023426 is an apocalyptic number.

61646023426 is a deficient number, since it is larger than the sum of its proper divisors (37936014458).

61646023426 is a wasteful number, since it uses less digits than its factorization.

61646023426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371000916.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 61646023426 in words is "sixty-one billion, six hundred forty-six million, twenty-three thousand, four hundred twenty-six".