62780477779 has 2 divisors, whose sum is σ = 62780477780. Its totient is φ = 62780477778.

The previous prime is 62780477741. The next prime is 62780477813. The reversal of 62780477779 is 97777408726.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 62780477779 - 2³¹ = 60632994131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 62780477779.

It is not a weakly prime, because it can be changed into another prime (62780477729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31390238889 + 31390238890.

It is an arithmetic number, because the mean of its divisors is an integer number (31390238890).

Almost surely, 2^62780477779 is an apocalyptic number.

62780477779 is a deficient number, since it is larger than the sum of its proper divisors (1).

62780477779 is an equidigital number, since it uses as much as digits as its factorization.

62780477779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58084992, while the sum is 64.

It can be divided in two parts, 6278047 and 7779, that added together give a palindrome (6285826).

The spelling of 62780477779 in words is "sixty-two billion, seven hundred eighty million, four hundred seventy-seven thousand, seven hundred seventy-nine".