1555020255435 has 16 divisors (see below), whose sum is σ = 2528819826720. Its totient is φ = 815748330240.

The previous prime is 1555020255409. The next prime is 1555020255449. The reversal of 1555020255435 is 5345520205551.

It is not a de Polignac number, because 1555020255435 - 2⁷ = 1555020255307 is a prime.

It is an unprimeable number.

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, 849736930 + ... + 849738759.

It is an arithmetic number, because the mean of its divisors is an integer number (158051239170).

Almost surely, 2^{1555020255435} is an apocalyptic number.

1555020255435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1555020255435 is a deficient number, since it is larger than the sum of its proper divisors (973799571285).

1555020255435 is a wasteful number, since it uses less digits than its factorization.

1555020255435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699475758.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 1555020255435 in words is "one trillion, five hundred fifty-five billion, twenty million, two hundred fifty-five thousand, four hundred thirty-five".