61650536633 has 12 divisors (see below), whose sum is σ = 71739686772. Its totient is φ = 52825812480.

The previous prime is 61650536611. The next prime is 61650536657. The reversal of 61650536633 is 33663505616.

It can be written as a sum of positive squares in 2 ways, for example, as 46637425849 + 15013110784 = 215957^2 + 122528^2 .

It is not a de Polignac number, because 61650536633 - 2⁸ = 61650536377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61650536693) 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 11 ways as a sum of consecutive naturals, for example, 57860 + ... + 355877.

It is an arithmetic number, because the mean of its divisors is an integer number (5978307231).

Almost surely, 2^61650536633 is an apocalyptic number.

It is an amenable number.

61650536633 is a deficient number, since it is larger than the sum of its proper divisors (10089150139).

61650536633 is a wasteful number, since it uses less digits than its factorization.

61650536633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416792 (or 416785 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 44.

The spelling of 61650536633 in words is "sixty-one billion, six hundred fifty million, five hundred thirty-six thousand, six hundred thirty-three".