61364065317556 has 24 divisors (see below), whose sum is σ = 108333461978280. Its totient is φ = 30412805576832.

The previous prime is 61364065317521. The next prime is 61364065317617. The reversal of 61364065317556 is 65571356046316.

It can be written as a sum of positive squares in 4 ways, for example, as 18068586512656 + 43295478804900 = 4250716^2 + 6579930^2 .

It is a super-2 number, since 2×61364065317556² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61364065317556.

It is a congruent 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, 144533715 + ... + 144957658.

It is an arithmetic number, because the mean of its divisors is an integer number (4513894249095).

Almost surely, 2^{61364065317556} is an apocalyptic number.

It is an amenable number.

61364065317556 is a deficient number, since it is larger than the sum of its proper divisors (46969396660724).

61364065317556 is a wasteful number, since it uses less digits than its factorization.

61364065317556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289491843 (or 289491841 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 58.

The spelling of 61364065317556 in words is "sixty-one trillion, three hundred sixty-four billion, sixty-five million, three hundred seventeen thousand, five hundred fifty-six".