1481978383517 has 16 divisors (see below), whose sum is σ = 1553489467392. Its totient is φ = 1411972950960.

The previous prime is 1481978383511. The next prime is 1481978383559. The reversal of 1481978383517 is 7153838791841.

It is a cyclic number.

It is not a de Polignac number, because 1481978383517 - 2¹⁸ = 1481978121373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481978383511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3511958 + ... + 3911240.

It is an arithmetic number, because the mean of its divisors is an integer number (97093091712).

Almost surely, 2^{1481978383517} is an apocalyptic number.

It is an amenable number.

1481978383517 is a deficient number, since it is larger than the sum of its proper divisors (71511083875).

1481978383517 is a wasteful number, since it uses less digits than its factorization.

1481978383517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401168.

The product of its digits is 40642560, while the sum is 65.

The spelling of 1481978383517 in words is "one trillion, four hundred eighty-one billion, nine hundred seventy-eight million, three hundred eighty-three thousand, five hundred seventeen".