61333220613 has 32 divisors (see below), whose sum is σ = 95335763200. Its totient is φ = 34348354560.

The previous prime is 61333220603. The next prime is 61333220621. The reversal of 61333220613 is 31602233316.

It is not a de Polignac number, because 61333220613 - 2²¹ = 61331123461 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 (61333220603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268413 + ... + 441261.

It is an arithmetic number, because the mean of its divisors is an integer number (2979242600).

Almost surely, 2^61333220613 is an apocalyptic number.

It is an amenable number.

61333220613 is a deficient number, since it is larger than the sum of its proper divisors (34002542587).

61333220613 is a wasteful number, since it uses less digits than its factorization.

61333220613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173197.

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 61333220613 its reverse (31602233316), we get a palindrome (92935453929).

The spelling of 61333220613 in words is "sixty-one billion, three hundred thirty-three million, two hundred twenty thousand, six hundred thirteen".