61212615443 has 8 divisors (see below), whose sum is σ = 70032586080. Its totient is φ = 52411472640.

The previous prime is 61212615437. The next prime is 61212615539. The reversal of 61212615443 is 34451621216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61212615443 - 2⁸ = 61212615187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61212615433) 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, 4699988 + ... + 4712993.

It is an arithmetic number, because the mean of its divisors is an integer number (8754073260).

Almost surely, 2^61212615443 is an apocalyptic number.

61212615443 is a deficient number, since it is larger than the sum of its proper divisors (8819970637).

61212615443 is an equidigital number, since it uses as much as digits as its factorization.

61212615443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9413917.

The product of its digits is 34560, while the sum is 35.

The spelling of 61212615443 in words is "sixty-one billion, two hundred twelve million, six hundred fifteen thousand, four hundred forty-three".