40021350433 has 4 divisors (see below), whose sum is σ = 40032561328. Its totient is φ = 40010139540.

The previous prime is 40021350431. The next prime is 40021350449. The reversal of 40021350433 is 33405312004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40021350433 - 2¹ = 40021350431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40021350398 and 40021350407.

It is not an unprimeable number, because it can be changed into a prime (40021350431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600091 + ... + 5607232.

It is an arithmetic number, because the mean of its divisors is an integer number (10008140332).

Almost surely, 2^40021350433 is an apocalyptic number.

It is an amenable number.

40021350433 is a deficient number, since it is larger than the sum of its proper divisors (11210895).

40021350433 is a wasteful number, since it uses less digits than its factorization.

40021350433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210894.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 40021350433 its reverse (33405312004), we get a palindrome (73426662437).

The spelling of 40021350433 in words is "forty billion, twenty-one million, three hundred fifty thousand, four hundred thirty-three".