61755035373555 has 16 divisors (see below), whose sum is σ = 98821250535840. Its totient is φ = 32931620886528.

The previous prime is 61755035373553. The next prime is 61755035373569. The reversal of 61755035373555 is 55537353055716.

It is not a de Polignac number, because 61755035373555 - 2¹ = 61755035373553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61755035373553) 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, 274757632 + ... + 274982301.

It is an arithmetic number, because the mean of its divisors is an integer number (6176328158490).

Almost surely, 2^{61755035373555} is an apocalyptic number.

61755035373555 is a deficient number, since it is larger than the sum of its proper divisors (37066215162285).

61755035373555 is a wasteful number, since it uses less digits than its factorization.

61755035373555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549747430.

The product of its (nonzero) digits is 124031250, while the sum is 60.

The spelling of 61755035373555 in words is "sixty-one trillion, seven hundred fifty-five billion, thirty-five million, three hundred seventy-three thousand, five hundred fifty-five".