1382412478821 has 16 divisors (see below), whose sum is σ = 2022404811840. Its totient is φ = 832982817920.

The previous prime is 1382412478817. The next prime is 1382412478897. The reversal of 1382412478821 is 1288742142831.

It is not a de Polignac number, because 1382412478821 - 2² = 1382412478817 is a prime.

It is a super-2 number, since 2×1382412478821² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1382412478721) 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, 121067376 + ... + 121078793.

It is an arithmetic number, because the mean of its divisors is an integer number (126400300740).

Almost surely, 2^{1382412478821} is an apocalyptic number.

1382412478821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1382412478821 is a deficient number, since it is larger than the sum of its proper divisors (639992333019).

1382412478821 is a wasteful number, since it uses less digits than its factorization.

1382412478821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242146356.

The product of its digits is 1376256, while the sum is 51.

The spelling of 1382412478821 in words is "one trillion, three hundred eighty-two billion, four hundred twelve million, four hundred seventy-eight thousand, eight hundred twenty-one".