61424195761213 has 4 divisors (see below), whose sum is σ = 61424308756348. Its totient is φ = 61424082766080.

The previous prime is 61424195761211. The next prime is 61424195761237. The reversal of 61424195761213 is 31216759142416.

It is a happy number.

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 22840246047609 + 38583949713604 = 4779147^2 + 6211598^2 .

It is a cyclic number.

It is not a de Polignac number, because 61424195761213 - 2¹ = 61424195761211 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 (61424195761211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55678206 + ... + 56770687.

It is an arithmetic number, because the mean of its divisors is an integer number (15356077189087).

Almost surely, 2^{61424195761213} is an apocalyptic number.

It is an amenable number.

61424195761213 is a deficient number, since it is larger than the sum of its proper divisors (112995135).

61424195761213 is a wasteful number, since it uses less digits than its factorization.

61424195761213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112995134.

The product of its digits is 2177280, while the sum is 52.

The spelling of 61424195761213 in words is "sixty-one trillion, four hundred twenty-four billion, one hundred ninety-five million, seven hundred sixty-one thousand, two hundred thirteen".