61388752558879 has 8 divisors (see below), whose sum is σ = 64171174584320. Its totient is φ = 58656464263800.

The previous prime is 61388752558871. The next prime is 61388752558961. The reversal of 61388752558879 is 97885525788316.

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 61388752558879 - 2³ = 61388752558871 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 (61388752558871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12533430087 + ... + 12533434984.

It is an arithmetic number, because the mean of its divisors is an integer number (8021396823040).

Almost surely, 2^{61388752558879} is an apocalyptic number.

61388752558879 is a deficient number, since it is larger than the sum of its proper divisors (2782422025441).

61388752558879 is a wasteful number, since it uses less digits than its factorization.

61388752558879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25066865181.

The product of its digits is 8128512000, while the sum is 82.

The spelling of 61388752558879 in words is "sixty-one trillion, three hundred eighty-eight billion, seven hundred fifty-two million, five hundred fifty-eight thousand, eight hundred seventy-nine".