61767042479 has 2 divisors, whose sum is σ = 61767042480. Its totient is φ = 61767042478.

The previous prime is 61767042451. The next prime is 61767042481. The reversal of 61767042479 is 97424076716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61767042479 - 2²⁴ = 61750265263 is a prime.

Together with 61767042481, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61767042479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61767042979) 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 as a sum of consecutive naturals, namely, 30883521239 + 30883521240.

It is an arithmetic number, because the mean of its divisors is an integer number (30883521240).

Almost surely, 2^61767042479 is an apocalyptic number.

61767042479 is a deficient number, since it is larger than the sum of its proper divisors (1).

61767042479 is an equidigital number, since it uses as much as digits as its factorization.

61767042479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 61767042479 in words is "sixty-one billion, seven hundred sixty-seven million, forty-two thousand, four hundred seventy-nine".