1020233155253 has 4 divisors (see below), whose sum is σ = 1098712628748. Its totient is φ = 941753681760.

The previous prime is 1020233155219. The next prime is 1020233155259. The reversal of 1020233155253 is 3525513320201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 641419986769 + 378813168484 = 800887^2 + 615478^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020233155253 - 2²⁸ = 1019964719797 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 (1020233155259) 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 3 ways as a sum of consecutive naturals, for example, 39239736728 + ... + 39239736753.

It is an arithmetic number, because the mean of its divisors is an integer number (274678157187).

Almost surely, 2^{1020233155253} is an apocalyptic number.

1020233155253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1020233155253 is a deficient number, since it is larger than the sum of its proper divisors (78479473495).

1020233155253 is an equidigital number, since it uses as much as digits as its factorization.

1020233155253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78479473494.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 1020233155253 its reverse (3525513320201), we get a palindrome (4545746475454).

The spelling of 1020233155253 in words is "one trillion, twenty billion, two hundred thirty-three million, one hundred fifty-five thousand, two hundred fifty-three".