1378516768507 has 16 divisors (see below), whose sum is σ = 1435517748000. Its totient is φ = 1322155021824.

The previous prime is 1378516768481. The next prime is 1378516768529. The reversal of 1378516768507 is 7058676158731.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1378516768507 is a prime.

It is a super-4 number, since 4×1378516768507⁴ (a number of 50 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1378516768597) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 9519219 + ... + 9662947.

It is an arithmetic number, because the mean of its divisors is an integer number (89719859250).

Almost surely, 2^{1378516768507} is an apocalyptic number.

1378516768507 is a deficient number, since it is larger than the sum of its proper divisors (57000979493).

1378516768507 is a wasteful number, since it uses less digits than its factorization.

1378516768507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145950.

The product of its (nonzero) digits is 59270400, while the sum is 64.

The spelling of 1378516768507 in words is "one trillion, three hundred seventy-eight billion, five hundred sixteen million, seven hundred sixty-eight thousand, five hundred seven".