1553111321332 has 24 divisors (see below), whose sum is σ = 2731140115200. Its totient is φ = 772788870816.

The previous prime is 1553111321317. The next prime is 1553111321351. The reversal of 1553111321332 is 2331231113551.

It is a junction number, because it is equal to n+sod(n) for n = 1553111321294 and 1553111321303.

It is a congruent number.

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, 1478769 + ... + 2300647.

It is an arithmetic number, because the mean of its divisors is an integer number (113797504800).

Almost surely, 2^{1553111321332} is an apocalyptic number.

It is an amenable number.

1553111321332 is a deficient number, since it is larger than the sum of its proper divisors (1178028793868).

1553111321332 is a wasteful number, since it uses less digits than its factorization.

1553111321332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824175 (or 824173 counting only the distinct ones).

The product of its digits is 8100, while the sum is 31.

Adding to 1553111321332 its reverse (2331231113551), we get a palindrome (3884342434883).

The spelling of 1553111321332 in words is "one trillion, five hundred fifty-three billion, one hundred eleven million, three hundred twenty-one thousand, three hundred thirty-two".