61554130061165 has 16 divisors (see below), whose sum is σ = 84425315325312. Its totient is φ = 42204434992704.

The previous prime is 61554130061159. The next prime is 61554130061167. The reversal of 61554130061165 is 56116003145516.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61554130061165 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 (61554130061167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85288334 + ... + 86007023.

It is an arithmetic number, because the mean of its divisors is an integer number (5276582207832).

Almost surely, 2^{61554130061165} is an apocalyptic number.

It is an amenable number.

61554130061165 is a deficient number, since it is larger than the sum of its proper divisors (22871185264147).

61554130061165 is a wasteful number, since it uses less digits than its factorization.

61554130061165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171305636.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 61554130061165 in words is "sixty-one trillion, five hundred fifty-four billion, one hundred thirty million, sixty-one thousand, one hundred sixty-five".