61753610886721 has 16 divisors (see below), whose sum is σ = 67128330265920. Its totient is φ = 56468320534080.

The previous prime is 61753610886661. The next prime is 61753610886739. The reversal of 61753610886721 is 12768801635716.

It is not a de Polignac number, because 61753610886721 - 2¹³ = 61753610878529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61753610886721.

It is not an unprimeable number, because it can be changed into a prime (61753610887721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2002026 + ... + 11292268.

It is an arithmetic number, because the mean of its divisors is an integer number (4195520641620).

Almost surely, 2^{61753610886721} is an apocalyptic number.

It is an amenable number.

61753610886721 is a deficient number, since it is larger than the sum of its proper divisors (5374719379199).

61753610886721 is a wasteful number, since it uses less digits than its factorization.

61753610886721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9295056.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 61753610886721 in words is "sixty-one trillion, seven hundred fifty-three billion, six hundred ten million, eight hundred eighty-six thousand, seven hundred twenty-one".