155704062779 has 2 divisors, whose sum is σ = 155704062780. Its totient is φ = 155704062778.

The previous prime is 155704062643. The next prime is 155704062859. The reversal of 155704062779 is 977260407551.

155704062779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155704062779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155704062779.

It is not a weakly prime, because it can be changed into another prime (155704022779) 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, 77852031389 + 77852031390.

It is an arithmetic number, because the mean of its divisors is an integer number (77852031390).

Almost surely, 2^155704062779 is an apocalyptic number.

155704062779 is a deficient number, since it is larger than the sum of its proper divisors (1).

155704062779 is an equidigital number, since it uses as much as digits as its factorization.

155704062779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3704400, while the sum is 53.

The spelling of 155704062779 in words is "one hundred fifty-five billion, seven hundred four million, sixty-two thousand, seven hundred seventy-nine".