1001023433020 has 72 divisors (see below), whose sum is σ = 2280648149136. Its totient is φ = 368901292032.

The previous prime is 1001023432943. The next prime is 1001023433041. The reversal of 1001023433020 is 203343201001.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1484604 + ... + 2050876.

It is an arithmetic number, because the mean of its divisors is an integer number (31675668738).

Almost surely, 2^{1001023433020} is an apocalyptic number.

1001023433020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001023433020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140324074568).

1001023433020 is an abundant number, since it is smaller than the sum of its proper divisors (1279624716116).

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

1001023433020 is a wasteful number, since it uses less digits than its factorization.

1001023433020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566831 (or 566816 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 1001023433020 its reverse (203343201001), we get a palindrome (1204366634021).

The spelling of 1001023433020 in words is "one trillion, one billion, twenty-three million, four hundred thirty-three thousand, twenty".