1378353354217 has 16 divisors (see below), whose sum is σ = 1618076524032. Its totient is φ = 1149624676800.

The previous prime is 1378353354211. The next prime is 1378353354289. The reversal of 1378353354217 is 7124533538731.

It is a cyclic number.

It is not a de Polignac number, because 1378353354217 - 2⁷ = 1378353354089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378353354211) 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, 12051534 + ... + 12165367.

It is an arithmetic number, because the mean of its divisors is an integer number (101129782752).

Almost surely, 2^{1378353354217} is an apocalyptic number.

It is an amenable number.

1378353354217 is a deficient number, since it is larger than the sum of its proper divisors (239723169815).

1378353354217 is a wasteful number, since it uses less digits than its factorization.

1378353354217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24217128.

The product of its digits is 6350400, while the sum is 52.

The spelling of 1378353354217 in words is "one trillion, three hundred seventy-eight billion, three hundred fifty-three million, three hundred fifty-four thousand, two hundred seventeen".