61021068805 has 8 divisors (see below), whose sum is σ = 73752084000. Its totient is φ = 48465654096.

The previous prime is 61021068803. The next prime is 61021068809. The reversal of 61021068805 is 50886012016.

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

It is a cyclic number.

It is not a de Polignac number, because 61021068805 - 2¹ = 61021068803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61021068803) 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 7 ways as a sum of consecutive naturals, for example, 43899355 + ... + 43900744.

It is an arithmetic number, because the mean of its divisors is an integer number (9219010500).

Almost surely, 2^61021068805 is an apocalyptic number.

It is an amenable number.

61021068805 is a deficient number, since it is larger than the sum of its proper divisors (12731015195).

61021068805 is a wasteful number, since it uses less digits than its factorization.

61021068805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87800243.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 61021068805 in words is "sixty-one billion, twenty-one million, sixty-eight thousand, eight hundred five".