40140653043421 has 32 divisors (see below), whose sum is σ = 46157573468160. Its totient is φ = 34195060555776.

The previous prime is 40140653043349. The next prime is 40140653043467. The reversal of 40140653043421 is 12434035604104.

It is a cyclic number.

It is not a de Polignac number, because 40140653043421 - 2¹¹ = 40140653041373 is a prime.

It is a super-2 number, since 2×40140653043421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140653047421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1503776151 + ... + 1503802843.

It is an arithmetic number, because the mean of its divisors is an integer number (1442424170880).

Almost surely, 2^{40140653043421} is an apocalyptic number.

It is an amenable number.

40140653043421 is a deficient number, since it is larger than the sum of its proper divisors (6016920424739).

40140653043421 is a wasteful number, since it uses less digits than its factorization.

40140653043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28813.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 40140653043421 its reverse (12434035604104), we get a palindrome (52574688647525).

The spelling of 40140653043421 in words is "forty trillion, one hundred forty billion, six hundred fifty-three million, forty-three thousand, four hundred twenty-one".