368687947689778 has 4 divisors (see below), whose sum is σ = 553031921534670. Its totient is φ = 184343973844888.

The previous prime is 368687947689769. The next prime is 368687947689779. The reversal of 368687947689778 is 877986749786863.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 296144621575609 + 72543326114169 = 17208853^2 + 8517237^2 .

It is not an unprimeable number, because it can be changed into a prime (368687947689779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92171986922443 + ... + 92171986922446.

Almost surely, 2^{368687947689778} is an apocalyptic number.

368687947689778 is a deficient number, since it is larger than the sum of its proper divisors (184343973844892).

368687947689778 is a wasteful number, since it uses less digits than its factorization.

368687947689778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184343973844891.

The product of its digits is 2064772104192, while the sum is 103.

The spelling of 368687947689778 in words is "three hundred sixty-eight trillion, six hundred eighty-seven billion, nine hundred forty-seven million, six hundred eighty-nine thousand, seven hundred seventy-eight".