61442615334101 has 4 divisors (see below), whose sum is σ = 61597382627532. Its totient is φ = 61287848040672.

The previous prime is 61442615334031. The next prime is 61442615334109. The reversal of 61442615334101 is 10143351624416.

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 20624904346225 + 40817710987876 = 4541465^2 + 6388874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61442615334101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61442615334109) 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, 77383646120 + ... + 77383646913.

It is an arithmetic number, because the mean of its divisors is an integer number (15399345656883).

Almost surely, 2^{61442615334101} is an apocalyptic number.

It is an amenable number.

61442615334101 is a deficient number, since it is larger than the sum of its proper divisors (154767293431).

61442615334101 is a wasteful number, since it uses less digits than its factorization.

61442615334101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154767293430.

The product of its (nonzero) digits is 207360, while the sum is 41.

Adding to 61442615334101 its reverse (10143351624416), we get a palindrome (71585966958517).

The spelling of 61442615334101 in words is "sixty-one trillion, four hundred forty-two billion, six hundred fifteen million, three hundred thirty-four thousand, one hundred one".