378728621606 has 4 divisors (see below), whose sum is σ = 568092932412. Its totient is φ = 189364310802.

The previous prime is 378728621549. The next prime is 378728621639. The reversal of 378728621606 is 606126827873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 606126827873 = 7 ⋅86589546839.

It is a congruent number.

It is an unprimeable number.

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, 94682155400 + ... + 94682155403.

It is an arithmetic number, because the mean of its divisors is an integer number (142023233103).

Almost surely, 2^378728621606 is an apocalyptic number.

378728621606 is a deficient number, since it is larger than the sum of its proper divisors (189364310806).

378728621606 is a wasteful number, since it uses less digits than its factorization.

378728621606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189364310805.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 378728621606 in words is "three hundred seventy-eight billion, seven hundred twenty-eight million, six hundred twenty-one thousand, six hundred six".