1320233364538 has 16 divisors (see below), whose sum is σ = 2160601529760. Its totient is φ = 600045058000.

The previous prime is 1320233364523. The next prime is 1320233364563. The reversal of 1320233364538 is 8354633320231.

It is a super-2 number, since 2×1320233364538² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320233364494 and 1320233364503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2829193 + ... + 3262636.

It is an arithmetic number, because the mean of its divisors is an integer number (135037595610).

Almost surely, 2^{1320233364538} is an apocalyptic number.

1320233364538 is a deficient number, since it is larger than the sum of its proper divisors (840368165222).

1320233364538 is a wasteful number, since it uses less digits than its factorization.

1320233364538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101693.

The product of its (nonzero) digits is 933120, while the sum is 43.

Adding to 1320233364538 its reverse (8354633320231), we get a palindrome (9674866684769).

The spelling of 1320233364538 in words is "one trillion, three hundred twenty billion, two hundred thirty-three million, three hundred sixty-four thousand, five hundred thirty-eight".