61115919979089 has 8 divisors (see below), whose sum is σ = 86281298794080. Its totient is φ = 38347243908416.

The previous prime is 61115919979031. The next prime is 61115919979111. The reversal of 61115919979089 is 98097991951116.

61115919979089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61115919979089 - 2⁴¹ = 58916896723537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61115919979089.

It is not an unprimeable number, because it can be changed into a prime (61115919979489) 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 7 ways as a sum of consecutive naturals, for example, 599175686019 + ... + 599175686120.

It is an arithmetic number, because the mean of its divisors is an integer number (10785162349260).

Almost surely, 2^{61115919979089} is an apocalyptic number.

It is an amenable number.

61115919979089 is a deficient number, since it is larger than the sum of its proper divisors (25165378814991).

61115919979089 is a wasteful number, since it uses less digits than its factorization.

61115919979089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198351372159.

The product of its (nonzero) digits is 99202320, while the sum is 75.

The spelling of 61115919979089 in words is "sixty-one trillion, one hundred fifteen billion, nine hundred nineteen million, nine hundred seventy-nine thousand, eighty-nine".