61221303362 has 6 divisors (see below), whose sum is σ = 91832479923. Its totient is φ = 30610476722.

The previous prime is 61221303313. The next prime is 61221303371. The reversal of 61221303362 is 26330312216.

It can be written as a sum of positive squares in only one way, i.e., 30610651681 + 30610651681 = 174959^2 + 174959^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=174959.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 262439 + ... + 437397.

Almost surely, 2^61221303362 is an apocalyptic number.

61221303362 is a deficient number, since it is larger than the sum of its proper divisors (30611176561).

61221303362 is an frugal number, since it uses more digits than its factorization.

61221303362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349920 (or 174961 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 61221303362 its reverse (26330312216), we get a palindrome (87551615578).

The spelling of 61221303362 in words is "sixty-one billion, two hundred twenty-one million, three hundred three thousand, three hundred sixty-two".