61488518581155 has 8 divisors (see below), whose sum is σ = 98381629729872. Its totient is φ = 32793876576608.

The previous prime is 61488518581141. The next prime is 61488518581169. The reversal of 61488518581155 is 55118581588416.

It is an interprime number because it is at equal distance from previous prime (61488518581141) and next prime (61488518581169).

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 61488518581155 - 2¹³ = 61488518572963 is a prime.

It is a super-2 number, since 2×61488518581155² (a number of 28 digits) contains 22 as substring.

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, 2049617286024 + ... + 2049617286053.

It is an arithmetic number, because the mean of its divisors is an integer number (12297703716234).

Almost surely, 2^{61488518581155} is an apocalyptic number.

61488518581155 is a deficient number, since it is larger than the sum of its proper divisors (36893111148717).

61488518581155 is a wasteful number, since it uses less digits than its factorization.

61488518581155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099234572085.

The product of its digits is 61440000, while the sum is 66.

The spelling of 61488518581155 in words is "sixty-one trillion, four hundred eighty-eight billion, five hundred eighteen million, five hundred eighty-one thousand, one hundred fifty-five".