1378902517968 has 40 divisors (see below), whose sum is σ = 3562227308416. Its totient is φ = 459626112000.

The previous prime is 1378902517939. The next prime is 1378902517969. The reversal of 1378902517968 is 8697152098731.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1378902517899 and 1378902517908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378902517969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2927328 + ... + 3365568.

Almost surely, 2^{1378902517968} is an apocalyptic number.

It is an amenable number.

1378902517968 is an abundant number, since it is smaller than the sum of its proper divisors (2183324790448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378902517968 is a wasteful number, since it uses less digits than its factorization.

1378902517968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503803 (or 503797 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 66.

The spelling of 1378902517968 in words is "one trillion, three hundred seventy-eight billion, nine hundred two million, five hundred seventeen thousand, nine hundred sixty-eight".