40143063405621 has 8 divisors (see below), whose sum is σ = 58389910408224. Its totient is φ = 24329129336720.

The previous prime is 40143063405581. The next prime is 40143063405629. The reversal of 40143063405621 is 12650436034104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40143063405621 - 2¹⁰ = 40143063404597 is a prime.

It is a super-2 number, since 2×40143063405621² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40143063405621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143063405629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608228233386 + ... + 608228233451.

It is an arithmetic number, because the mean of its divisors is an integer number (7298738801028).

Almost surely, 2^{40143063405621} is an apocalyptic number.

It is an amenable number.

40143063405621 is a deficient number, since it is larger than the sum of its proper divisors (18246847002603).

40143063405621 is a wasteful number, since it uses less digits than its factorization.

40143063405621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216456466851.

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 40143063405621 its reverse (12650436034104), we get a palindrome (52793499439725).

The spelling of 40143063405621 in words is "forty trillion, one hundred forty-three billion, sixty-three million, four hundred five thousand, six hundred twenty-one".