612661522471 has 2 divisors, whose sum is σ = 612661522472. Its totient is φ = 612661522470.

The previous prime is 612661522441. The next prime is 612661522507. The reversal of 612661522471 is 174225166216.

612661522471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612661522471 - 2⁵ = 612661522439 is a prime.

It is a super-3 number, since 3×612661522471³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612661522441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306330761235 + 306330761236.

It is an arithmetic number, because the mean of its divisors is an integer number (306330761236).

Almost surely, 2^612661522471 is an apocalyptic number.

612661522471 is a deficient number, since it is larger than the sum of its proper divisors (1).

612661522471 is an equidigital number, since it uses as much as digits as its factorization.

612661522471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

Adding to 612661522471 its reverse (174225166216), we get a palindrome (786886688687).

The spelling of 612661522471 in words is "six hundred twelve billion, six hundred sixty-one million, five hundred twenty-two thousand, four hundred seventy-one".