61648785619739 has 8 divisors (see below), whose sum is σ = 62695949598720. Its totient is φ = 60601697284456.

The previous prime is 61648785619723. The next prime is 61648785619747. The reversal of 61648785619739 is 93791658784616.

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 61648785619739 - 2⁴ = 61648785619723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61648785619709) 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, 17265899 + ... + 20528244.

It is an arithmetic number, because the mean of its divisors is an integer number (7836993699840).

Almost surely, 2^{61648785619739} is an apocalyptic number.

61648785619739 is a deficient number, since it is larger than the sum of its proper divisors (1047163978981).

61648785619739 is a wasteful number, since it uses less digits than its factorization.

61648785619739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37821849.

The product of its digits is 3292047360, while the sum is 80.

The spelling of 61648785619739 in words is "sixty-one trillion, six hundred forty-eight billion, seven hundred eighty-five million, six hundred nineteen thousand, seven hundred thirty-nine".