61212614071 has 4 divisors (see below), whose sum is σ = 69957273232. Its totient is φ = 52467954912.

The previous prime is 61212614039. The next prime is 61212614077. The reversal of 61212614071 is 17041621216.

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 61212614071 - 2⁵ = 61212614039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61212614077) 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, 4372329570 + ... + 4372329583.

It is an arithmetic number, because the mean of its divisors is an integer number (17489318308).

Almost surely, 2^61212614071 is an apocalyptic number.

61212614071 is a deficient number, since it is larger than the sum of its proper divisors (8744659161).

61212614071 is an equidigital number, since it uses as much as digits as its factorization.

61212614071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744659160.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 61212614071 in words is "sixty-one billion, two hundred twelve million, six hundred fourteen thousand, seventy-one".