61755704321 has 8 divisors (see below), whose sum is σ = 62028158400. Its totient is φ = 61483568400.

The previous prime is 61755704303. The next prime is 61755704323. The reversal of 61755704321 is 12340755716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61755704321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61755704323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313796 + ... + 471146.

It is an arithmetic number, because the mean of its divisors is an integer number (7753519800).

Almost surely, 2^61755704321 is an apocalyptic number.

It is an amenable number.

61755704321 is a deficient number, since it is larger than the sum of its proper divisors (272454079).

61755704321 is a wasteful number, since it uses less digits than its factorization.

61755704321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159079.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 61755704321 in words is "sixty-one billion, seven hundred fifty-five million, seven hundred four thousand, three hundred twenty-one".