61226436013 has 8 divisors (see below), whose sum is σ = 63217541120. Its totient is φ = 59236334640.

The previous prime is 61226435953. The next prime is 61226436059. The reversal of 61226436013 is 31063462216.

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-61226436013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61226436013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61226436083) 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, 125958 + ... + 371911.

It is an arithmetic number, because the mean of its divisors is an integer number (7902192640).

Almost surely, 2^61226436013 is an apocalyptic number.

It is an amenable number.

61226436013 is a deficient number, since it is larger than the sum of its proper divisors (1991105107).

61226436013 is a wasteful number, since it uses less digits than its factorization.

61226436013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501867.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 61226436013 its reverse (31063462216), we get a palindrome (92289898229).

The spelling of 61226436013 in words is "sixty-one billion, two hundred twenty-six million, four hundred thirty-six thousand, thirteen".