61489117126079 has 4 divisors (see below), whose sum is σ = 61489135308984. Its totient is φ = 61489098943176.

The previous prime is 61489117125941. The next prime is 61489117126103. The reversal of 61489117126079 is 97062171198416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61489117126079 - 2¹² = 61489117121983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61489117326079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355152 + ... + 11336885.

It is an arithmetic number, because the mean of its divisors is an integer number (15372283827246).

Almost surely, 2^{61489117126079} is an apocalyptic number.

61489117126079 is a deficient number, since it is larger than the sum of its proper divisors (18182905).

61489117126079 is a wasteful number, since it uses less digits than its factorization.

61489117126079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18182904.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 61489117126079 in words is "sixty-one trillion, four hundred eighty-nine billion, one hundred seventeen million, one hundred twenty-six thousand, seventy-nine".