1355442204538 has 4 divisors (see below), whose sum is σ = 2033163306810. Its totient is φ = 677721102268.

The previous prime is 1355442204509. The next prime is 1355442204539. The reversal of 1355442204538 is 8354022445531.

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

It can be written as a sum of positive squares in only one way, i.e., 1103354865649 + 252087338889 = 1050407^2 + 502083^2 .

It is not an unprimeable number, because it can be changed into a prime (1355442204539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338860551133 + ... + 338860551136.

Almost surely, 2^{1355442204538} is an apocalyptic number.

1355442204538 is a deficient number, since it is larger than the sum of its proper divisors (677721102272).

1355442204538 is an equidigital number, since it uses as much as digits as its factorization.

1355442204538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677721102271.

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 1355442204538 in words is "one trillion, three hundred fifty-five billion, four hundred forty-two million, two hundred four thousand, five hundred thirty-eight".