1378544513415 has 16 divisors (see below), whose sum is σ = 2238591689088. Its totient is φ = 724250251296.

The previous prime is 1378544513383. The next prime is 1378544513453. The reversal of 1378544513415 is 5143154458731.

It is not a de Polignac number, because 1378544513415 - 2⁵ = 1378544513383 is a prime.

It is a super-2 number, since 2×1378544513415² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685842037 + ... + 685844046.

It is an arithmetic number, because the mean of its divisors is an integer number (139911980568).

Almost surely, 2^{1378544513415} is an apocalyptic number.

1378544513415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1378544513415 is a deficient number, since it is larger than the sum of its proper divisors (860047175673).

1378544513415 is a wasteful number, since it uses less digits than its factorization.

1378544513415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371686158.

The product of its digits is 4032000, while the sum is 51.

The spelling of 1378544513415 in words is "one trillion, three hundred seventy-eight billion, five hundred forty-four million, five hundred thirteen thousand, four hundred fifteen".