40352053034621 has 2 divisors, whose sum is σ = 40352053034622. Its totient is φ = 40352053034620.

The previous prime is 40352053034549. The next prime is 40352053034633. The reversal of 40352053034621 is 12643035025304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38773162776100 + 1578890258521 = 6226810^2 + 1256539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40352053034621 is a prime.

It is a super-2 number, since 2×40352053034621² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40352053034651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20176026517310 + 20176026517311.

It is an arithmetic number, because the mean of its divisors is an integer number (20176026517311).

Almost surely, 2^{40352053034621} is an apocalyptic number.

It is an amenable number.

40352053034621 is a deficient number, since it is larger than the sum of its proper divisors (1).

40352053034621 is an equidigital number, since it uses as much as digits as its factorization.

40352053034621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 40352053034621 its reverse (12643035025304), we get a palindrome (52995088059925).

The spelling of 40352053034621 in words is "forty trillion, three hundred fifty-two billion, fifty-three million, thirty-four thousand, six hundred twenty-one".