1040450811621 has 16 divisors (see below), whose sum is σ = 1519302361920. Its totient is φ = 629425261440.

The previous prime is 1040450811611. The next prime is 1040450811637. The reversal of 1040450811621 is 1261180540401.

It is not a de Polignac number, because 1040450811621 - 2⁶ = 1040450811557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040450811611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226084360 + ... + 226088961.

It is an arithmetic number, because the mean of its divisors is an integer number (94956397620).

Almost surely, 2^{1040450811621} is an apocalyptic number.

It is an amenable number.

1040450811621 is a deficient number, since it is larger than the sum of its proper divisors (478851550299).

1040450811621 is a wasteful number, since it uses less digits than its factorization.

1040450811621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452173396.

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 1040450811621 in words is "one trillion, forty billion, four hundred fifty million, eight hundred eleven thousand, six hundred twenty-one".