1553432243002 has 4 divisors (see below), whose sum is σ = 2330148364506. Its totient is φ = 776716121500.

The previous prime is 1553432242987. The next prime is 1553432243017. The reversal of 1553432243002 is 2003422343551.

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

It is an interprime number because it is at equal distance from previous prime (1553432242987) and next prime (1553432243017).

It can be written as a sum of positive squares in only one way, i.e., 1066285477321 + 487146765681 = 1032611^2 + 697959^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388358060749 + ... + 388358060752.

Almost surely, 2^{1553432243002} is an apocalyptic number.

1553432243002 is a deficient number, since it is larger than the sum of its proper divisors (776716121504).

1553432243002 is an equidigital number, since it uses as much as digits as its factorization.

1553432243002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776716121503.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 1553432243002 its reverse (2003422343551), we get a palindrome (3556854586553).

The spelling of 1553432243002 in words is "one trillion, five hundred fifty-three billion, four hundred thirty-two million, two hundred forty-three thousand, two".