61222440343 has 4 divisors (see below), whose sum is σ = 62226086968. Its totient is φ = 60218793720.

The previous prime is 61222440277. The next prime is 61222440353. The reversal of 61222440343 is 34304422216.

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

It is a cyclic number.

It is not a de Polignac number, because 61222440343 - 2¹³ = 61222432151 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 (61222440353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501823221 + ... + 501823342.

It is an arithmetic number, because the mean of its divisors is an integer number (15556521742).

Almost surely, 2^61222440343 is an apocalyptic number.

61222440343 is a deficient number, since it is larger than the sum of its proper divisors (1003646625).

61222440343 is a wasteful number, since it uses less digits than its factorization.

61222440343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003646624.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 61222440343 its reverse (34304422216), we get a palindrome (95526862559).

The spelling of 61222440343 in words is "sixty-one billion, two hundred twenty-two million, four hundred forty thousand, three hundred forty-three".