1381832415545 has 8 divisors (see below), whose sum is σ = 1660199143560. Its totient is φ = 1104132435840.

The previous prime is 1381832415533. The next prime is 1381832415581. The reversal of 1381832415545 is 5455142381831.

It can be written as a sum of positive squares in 4 ways, for example, as 118121441344 + 1263710974201 = 343688^2 + 1124149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1381832415545 - 2²⁶ = 1381765306681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1381832415493 and 1381832415502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166682516 + ... + 166690805.

It is an arithmetic number, because the mean of its divisors is an integer number (207524892945).

Almost surely, 2^{1381832415545} is an apocalyptic number.

It is an amenable number.

1381832415545 is a deficient number, since it is larger than the sum of its proper divisors (278366728015).

1381832415545 is an equidigital number, since it uses as much as digits as its factorization.

1381832415545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333374155.

The product of its digits is 2304000, while the sum is 50.

The spelling of 1381832415545 in words is "one trillion, three hundred eighty-one billion, eight hundred thirty-two million, four hundred fifteen thousand, five hundred forty-five".