61359945389 has 8 divisors (see below), whose sum is σ = 61825498560. Its totient is φ = 60895756576.

The previous prime is 61359945379. The next prime is 61359945397. The reversal of 61359945389 is 98354995316.

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 61359945389 - 2²⁸ = 61091509933 is a prime.

It is a super-2 number, since 2×61359945389² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61359945359) 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, 250712 + ... + 430785.

It is an arithmetic number, because the mean of its divisors is an integer number (7728187320).

Almost surely, 2^61359945389 is an apocalyptic number.

It is an amenable number.

61359945389 is a deficient number, since it is larger than the sum of its proper divisors (465553171).

61359945389 is a wasteful number, since it uses less digits than its factorization.

61359945389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682179.

The product of its digits is 31492800, while the sum is 62.

The spelling of 61359945389 in words is "sixty-one billion, three hundred fifty-nine million, nine hundred forty-five thousand, three hundred eighty-nine".