61429901579 has 2 divisors, whose sum is σ = 61429901580. Its totient is φ = 61429901578.

The previous prime is 61429901513. The next prime is 61429901581. The reversal of 61429901579 is 97510992416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61429901579 - 2²⁸ = 61161466123 is a prime.

Together with 61429901581, 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 61429901579.

It is not a weakly prime, because it can be changed into another prime (61429901479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30714950789 + 30714950790.

It is an arithmetic number, because the mean of its divisors is an integer number (30714950790).

Almost surely, 2^61429901579 is an apocalyptic number.

61429901579 is a deficient number, since it is larger than the sum of its proper divisors (1).

61429901579 is an equidigital number, since it uses as much as digits as its factorization.

61429901579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 61429901579 in words is "sixty-one billion, four hundred twenty-nine million, nine hundred one thousand, five hundred seventy-nine".