1023403202544 has 20 divisors (see below), whose sum is σ = 2643791606696. Its totient is φ = 341134400832.

The previous prime is 1023403202527. The next prime is 1023403202551. The reversal of 1023403202544 is 4452023043201.

It is a super-2 number, since 2×1023403202544² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 10660449979 + ... + 10660450074.

Almost surely, 2^{1023403202544} is an apocalyptic number.

It is an amenable number.

1023403202544 is an abundant number, since it is smaller than the sum of its proper divisors (1620388404152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023403202544 is a wasteful number, since it uses less digits than its factorization.

1023403202544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21320900064 (or 21320900058 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 1023403202544 its reverse (4452023043201), we get a palindrome (5475426245745).

The spelling of 1023403202544 in words is "one trillion, twenty-three billion, four hundred three million, two hundred two thousand, five hundred forty-four".