2040451301021 has 4 divisors (see below), whose sum is σ = 2331944344032. Its totient is φ = 1748958258012.

The previous prime is 2040451301017. The next prime is 2040451301027. The reversal of 2040451301021 is 1201031540402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2040451301021 - 2² = 2040451301017 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 (2040451301027) 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, 145746521495 + ... + 145746521508.

It is an arithmetic number, because the mean of its divisors is an integer number (582986086008).

Almost surely, 2^{2040451301021} is an apocalyptic number.

It is an amenable number.

2040451301021 is a deficient number, since it is larger than the sum of its proper divisors (291493043011).

2040451301021 is an equidigital number, since it uses as much as digits as its factorization.

2040451301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291493043010.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 2040451301021 its reverse (1201031540402), we get a palindrome (3241482841423).

The spelling of 2040451301021 in words is "two trillion, forty billion, four hundred fifty-one million, three hundred one thousand, twenty-one".