1378507915147 has 32 divisors (see below), whose sum is σ = 1601084620800. Its totient is φ = 1172961377280.

The previous prime is 1378507915133. The next prime is 1378507915171. The reversal of 1378507915147 is 7415197058731.

It is not a de Polignac number, because 1378507915147 - 2²⁷ = 1378373697419 is a prime.

It is a super-4 number, since 4×1378507915147⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1378507915091 and 1378507915100.

It is not an unprimeable number, because it can be changed into a prime (1378507915117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85470198 + ... + 85486324.

It is an arithmetic number, because the mean of its divisors is an integer number (50033894400).

Almost surely, 2^{1378507915147} is an apocalyptic number.

1378507915147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1378507915147 is a deficient number, since it is larger than the sum of its proper divisors (222576705653).

1378507915147 is a wasteful number, since it uses less digits than its factorization.

1378507915147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18651.

The product of its (nonzero) digits is 7408800, while the sum is 58.

The spelling of 1378507915147 in words is "one trillion, three hundred seventy-eight billion, five hundred seven million, nine hundred fifteen thousand, one hundred forty-seven".