61242220008929 has 32 divisors (see below), whose sum is σ = 68641927096320. Its totient is φ = 54376829337600.

The previous prime is 61242220008923. The next prime is 61242220009013. The reversal of 61242220008929 is 92980002224216.

61242220008929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61242220008929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61242220008923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5865104 + ... + 12525329.

It is an arithmetic number, because the mean of its divisors is an integer number (2145060221760).

Almost surely, 2^{61242220008929} is an apocalyptic number.

It is an amenable number.

61242220008929 is a deficient number, since it is larger than the sum of its proper divisors (7399707087391).

61242220008929 is a wasteful number, since it uses less digits than its factorization.

61242220008929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18390641.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 61242220008929 in words is "sixty-one trillion, two hundred forty-two billion, two hundred twenty million, eight thousand, nine hundred twenty-nine".