61643120345741 has 8 divisors (see below), whose sum is σ = 70786358292000. Its totient is φ = 53089768718640.

The previous prime is 61643120345701. The next prime is 61643120345753. The reversal of 61643120345741 is 14754302134616.

It is a happy number.

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 61643120345741 - 2²² = 61643116151437 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 (61643120345701) 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, 147471579566 + ... + 147471579983.

It is an arithmetic number, because the mean of its divisors is an integer number (8848294786500).

Almost surely, 2^{61643120345741} is an apocalyptic number.

It is an amenable number.

61643120345741 is a deficient number, since it is larger than the sum of its proper divisors (9143237946259).

61643120345741 is a wasteful number, since it uses less digits than its factorization.

61643120345741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294943159579.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 61643120345741 in words is "sixty-one trillion, six hundred forty-three billion, one hundred twenty million, three hundred forty-five thousand, seven hundred forty-one".