1320003621634 has 8 divisors (see below), whose sum is σ = 1980011696508. Its totient is φ = 659999722800.

The previous prime is 1320003621619. The next prime is 1320003621647. The reversal of 1320003621634 is 4361263000231.

It can be written as a sum of positive squares in 2 ways, for example, as 1307256082609 + 12747539025 = 1143353^2 + 112905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1320003621634² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320003621596 and 1320003621605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73257 + ... + 1626460.

Almost surely, 2^{1320003621634} is an apocalyptic number.

1320003621634 is a deficient number, since it is larger than the sum of its proper divisors (660008074874).

1320003621634 is a wasteful number, since it uses less digits than its factorization.

1320003621634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088020.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 1320003621634 its reverse (4361263000231), we get a palindrome (5681266621865).

The spelling of 1320003621634 in words is "one trillion, three hundred twenty billion, three million, six hundred twenty-one thousand, six hundred thirty-four".