1375222452138 has 16 divisors (see below), whose sum is σ = 3056049893760. Its totient is φ = 458407484028.

The previous prime is 1375222452133. The next prime is 1375222452157. The reversal of 1375222452138 is 8312542225731.

1375222452138 is a `hidden beast` number, since 1 + 3 + 75 + 2 + 2 + 24 + 521 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1375222452093 and 1375222452102.

It is not an unprimeable number, because it can be changed into a prime (1375222452133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12733541170 + ... + 12733541277.

It is an arithmetic number, because the mean of its divisors is an integer number (191003118360).

Almost surely, 2^{1375222452138} is an apocalyptic number.

1375222452138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1375222452138 is an abundant number, since it is smaller than the sum of its proper divisors (1680827441622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1375222452138 is a wasteful number, since it uses less digits than its factorization.

1375222452138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25467082458 (or 25467082452 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

Adding to 1375222452138 its reverse (8312542225731), we get a palindrome (9687764677869).

The spelling of 1375222452138 in words is "one trillion, three hundred seventy-five billion, two hundred twenty-two million, four hundred fifty-two thousand, one hundred thirty-eight".