378728621607 has 24 divisors (see below), whose sum is σ = 612955645056. Its totient is φ = 207006946608.

The previous prime is 378728621549. The next prime is 378728621639. The reversal of 378728621607 is 706126827873.

It is a happy number.

378728621607 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 378728621607 - 2¹⁵ = 378728588839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378728621107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56004993 + ... + 56011754.

It is an arithmetic number, because the mean of its divisors is an integer number (25539818544).

Almost surely, 2^378728621607 is an apocalyptic number.

378728621607 is a deficient number, since it is larger than the sum of its proper divisors (234227023449).

378728621607 is a wasteful number, since it uses less digits than its factorization.

378728621607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112016787 (or 112016780 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 57.

The spelling of 378728621607 in words is "three hundred seventy-eight billion, seven hundred twenty-eight million, six hundred twenty-one thousand, six hundred seven".