61650033605 has 16 divisors (see below), whose sum is σ = 78412088880. Its totient is φ = 46371274752.

The previous prime is 61650033559. The next prime is 61650033619. The reversal of 61650033605 is 50633005616.

It can be written as a sum of positive squares in 8 ways, for example, as 454158721 + 61195874884 = 21311^2 + 247378^2 .

It is a cyclic number.

It is not a de Polignac number, because 61650033605 - 2⁶ = 61650033541 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 288140 + ... + 454229.

It is an arithmetic number, because the mean of its divisors is an integer number (4900755555).

Almost surely, 2^61650033605 is an apocalyptic number.

It is an amenable number.

61650033605 is a deficient number, since it is larger than the sum of its proper divisors (16762055275).

61650033605 is a wasteful number, since it uses less digits than its factorization.

61650033605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743368.

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 61650033605 in words is "sixty-one billion, six hundred fifty million, thirty-three thousand, six hundred five".