1555535435542 has 32 divisors (see below), whose sum is σ = 2559903367680. Its totient is φ = 703039665120.

The previous prime is 1555535435527. The next prime is 1555535435543. The reversal of 1555535435542 is 2455345355551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1555535435542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555535435543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65725203 + ... + 65748865.

It is an arithmetic number, because the mean of its divisors is an integer number (79996980240).

Almost surely, 2^{1555535435542} is an apocalyptic number.

1555535435542 is a deficient number, since it is larger than the sum of its proper divisors (1004367932138).

1555535435542 is a wasteful number, since it uses less digits than its factorization.

1555535435542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40548.

The product of its digits is 22500000, while the sum is 52.

The spelling of 1555535435542 in words is "one trillion, five hundred fifty-five billion, five hundred thirty-five million, four hundred thirty-five thousand, five hundred forty-two".