61440650826 has 8 divisors (see below), whose sum is σ = 122881301664. Its totient is φ = 20480216940.

The previous prime is 61440650801. The next prime is 61440650851. The reversal of 61440650826 is 62805604416.

It is an interprime number because it is at equal distance from previous prime (61440650801) and next prime (61440650851).

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

61440650826 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5120054230 + ... + 5120054241.

It is an arithmetic number, because the mean of its divisors is an integer number (15360162708).

Almost surely, 2^61440650826 is an apocalyptic number.

61440650826 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61440650826 is a wasteful number, since it uses less digits than its factorization.

61440650826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240108476.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 61440650826 in words is "sixty-one billion, four hundred forty million, six hundred fifty thousand, eight hundred twenty-six".