77368201778 has 16 divisors (see below), whose sum is σ = 132672078144. Its totient is φ = 33147582000.

The previous prime is 77368201763. The next prime is 77368201787. The reversal of 77368201778 is 87710286377.

It is a super-2 number, since 2×77368201778² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804425 + ... + 895452.

It is an arithmetic number, because the mean of its divisors is an integer number (8292004884).

Almost surely, 2^77368201778 is an apocalyptic number.

77368201778 is a deficient number, since it is larger than the sum of its proper divisors (55303876366).

77368201778 is a wasteful number, since it uses less digits than its factorization.

77368201778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703137.

The product of its (nonzero) digits is 5531904, while the sum is 56.

The spelling of 77368201778 in words is "seventy-seven billion, three hundred sixty-eight million, two hundred one thousand, seven hundred seventy-eight".