1555233632023 has 4 divisors (see below), whose sum is σ = 1578446074360. Its totient is φ = 1532021189688.

The previous prime is 1555233632021. The next prime is 1555233632033. The reversal of 1555233632023 is 3202363325551.

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

It is a cyclic number.

It is not a de Polignac number, because 1555233632023 - 2¹ = 1555233632021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555233632021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11606221068 + ... + 11606221201.

It is an arithmetic number, because the mean of its divisors is an integer number (394611518590).

Almost surely, 2^{1555233632023} is an apocalyptic number.

1555233632023 is a deficient number, since it is larger than the sum of its proper divisors (23212442337).

1555233632023 is an equidigital number, since it uses as much as digits as its factorization.

1555233632023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23212442336.

The product of its (nonzero) digits is 486000, while the sum is 40.

Adding to 1555233632023 its reverse (3202363325551), we get a palindrome (4757596957574).

The spelling of 1555233632023 in words is "one trillion, five hundred fifty-five billion, two hundred thirty-three million, six hundred thirty-two thousand, twenty-three".