21023342035040 has 24 divisors (see below), whose sum is σ = 49667645558160. Its totient is φ = 8409336813952.

The previous prime is 21023342034991. The next prime is 21023342035049. The reversal of 21023342035040 is 4053024332012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21023342034994 and 21023342035012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023342035049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65697943700 + ... + 65697944019.

It is an arithmetic number, because the mean of its divisors is an integer number (2069485231590).

Almost surely, 2^{21023342035040} is an apocalyptic number.

21023342035040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21023342035040 is an abundant number, since it is smaller than the sum of its proper divisors (28644303523120).

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

21023342035040 is a wasteful number, since it uses less digits than its factorization.

21023342035040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131395887734 (or 131395887726 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 21023342035040 its reverse (4053024332012), we get a palindrome (25076366367052).

The spelling of 21023342035040 in words is "twenty-one trillion, twenty-three billion, three hundred forty-two million, thirty-five thousand, forty".