61744905041 has 4 divisors (see below), whose sum is σ = 62590725732. Its totient is φ = 60899084352.

The previous prime is 61744905031. The next prime is 61744905073. The reversal of 61744905041 is 14050944716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19910338816 + 41834566225 = 141104^2 + 204535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61744905041 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 61744905041.

It is not an unprimeable number, because it can be changed into a prime (61744905011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422910236 + ... + 422910381.

It is an arithmetic number, because the mean of its divisors is an integer number (15647681433).

Almost surely, 2^61744905041 is an apocalyptic number.

It is an amenable number.

61744905041 is a deficient number, since it is larger than the sum of its proper divisors (845820691).

61744905041 is an equidigital number, since it uses as much as digits as its factorization.

61744905041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845820690.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 61744905041 in words is "sixty-one billion, seven hundred forty-four million, nine hundred five thousand, forty-one".