61589848745 has 8 divisors (see below), whose sum is σ = 74032455816. Its totient is φ = 49188787456.

The previous prime is 61589848739. The next prime is 61589848877. The reversal of 61589848745 is 54784898516.

It can be written as a sum of positive squares in 4 ways, for example, as 10816 + 61589837929 = 104^2 + 248173^2 .

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 61589848745 - 2⁴ = 61589848729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10383182 + ... + 10389111.

It is an arithmetic number, because the mean of its divisors is an integer number (9254056977).

Almost surely, 2^61589848745 is an apocalyptic number.

It is an amenable number.

61589848745 is a deficient number, since it is larger than the sum of its proper divisors (12442607071).

61589848745 is a wasteful number, since it uses less digits than its factorization.

61589848745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20772891.

The product of its digits is 77414400, while the sum is 65.

The spelling of 61589848745 in words is "sixty-one billion, five hundred eighty-nine million, eight hundred forty-eight thousand, seven hundred forty-five".