61226202311 has 4 divisors (see below), whose sum is σ = 61227050592. Its totient is φ = 61225354032.

The previous prime is 61226202283. The next prime is 61226202329. The reversal of 61226202311 is 11320262216.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61226202311 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 (61226202371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304655 + ... + 463968.

It is an arithmetic number, because the mean of its divisors is an integer number (15306762648).

Almost surely, 2^61226202311 is an apocalyptic number.

61226202311 is a deficient number, since it is larger than the sum of its proper divisors (848281).

61226202311 is an equidigital number, since it uses as much as digits as its factorization.

61226202311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848280.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 61226202311 its reverse (11320262216), we get a palindrome (72546464527).

The spelling of 61226202311 in words is "sixty-one billion, two hundred twenty-six million, two hundred two thousand, three hundred eleven".