2021040402440 has 64 divisors (see below), whose sum is σ = 4749817363200. Its totient is φ = 772961640192.

The previous prime is 2021040402431. The next prime is 2021040402517. The reversal of 2021040402440 is 442040401202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8338172 + ... + 8577131.

It is an arithmetic number, because the mean of its divisors is an integer number (74215896300).

Almost surely, 2^{2021040402440} is an apocalyptic number.

2021040402440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021040402440 is an abundant number, since it is smaller than the sum of its proper divisors (2728776960760).

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

2021040402440 is a wasteful number, since it uses less digits than its factorization.

2021040402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16915446 (or 16915442 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 2021040402440 its reverse (442040401202), we get a palindrome (2463080803642).

The spelling of 2021040402440 in words is "two trillion, twenty-one billion, forty million, four hundred two thousand, four hundred forty".