1553353121442 has 32 divisors (see below), whose sum is σ = 3290116205952. Its totient is φ = 487228315904.

The previous prime is 1553353121423. The next prime is 1553353121443. The reversal of 1553353121442 is 2441213533551.

It is a self number, because there is not a number n which added to its sum of digits gives 1553353121442.

It is not an unprimeable number, because it can be changed into a prime (1553353121443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023918 + ... + 2038409.

It is an arithmetic number, because the mean of its divisors is an integer number (102816131436).

Almost surely, 2^{1553353121442} is an apocalyptic number.

1553353121442 is an abundant number, since it is smaller than the sum of its proper divisors (1736763084510).

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

1553353121442 is a wasteful number, since it uses less digits than its factorization.

1553353121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067322.

The product of its digits is 216000, while the sum is 39.

Adding to 1553353121442 its reverse (2441213533551), we get a palindrome (3994566654993).

The spelling of 1553353121442 in words is "one trillion, five hundred fifty-three billion, three hundred fifty-three million, one hundred twenty-one thousand, four hundred forty-two".