61240734479 has 2 divisors, whose sum is σ = 61240734480. Its totient is φ = 61240734478.

The previous prime is 61240734439. The next prime is 61240734481. The reversal of 61240734479 is 97443704216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61240734479 is a prime.

Together with 61240734481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61240734439) 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, 30620367239 + 30620367240.

It is an arithmetic number, because the mean of its divisors is an integer number (30620367240).

Almost surely, 2^61240734479 is an apocalyptic number.

61240734479 is a deficient number, since it is larger than the sum of its proper divisors (1).

61240734479 is an equidigital number, since it uses as much as digits as its factorization.

61240734479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 61240734479 in words is "sixty-one billion, two hundred forty million, seven hundred thirty-four thousand, four hundred seventy-nine".