1375222452137 has 4 divisors (see below), whose sum is σ = 1456117890516. Its totient is φ = 1294327013760.

The previous prime is 1375222452133. The next prime is 1375222452157. The reversal of 1375222452137 is 7312542225731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 553850012521 + 821372439616 = 744211^2 + 906296^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375222452137 - 2² = 1375222452133 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 40447719164 + ... + 40447719197.

It is an arithmetic number, because the mean of its divisors is an integer number (364029472629).

Almost surely, 2^{1375222452137} is an apocalyptic number.

1375222452137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1375222452137 is a deficient number, since it is larger than the sum of its proper divisors (80895438379).

1375222452137 is an equidigital number, since it uses as much as digits as its factorization.

1375222452137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80895438378.

The product of its digits is 705600, while the sum is 44.

Adding to 1375222452137 its reverse (7312542225731), we get a palindrome (8687764677868).

The spelling of 1375222452137 in words is "one trillion, three hundred seventy-five billion, two hundred twenty-two million, four hundred fifty-two thousand, one hundred thirty-seven".