40020341051 has 4 divisors (see below), whose sum is σ = 40023888672. Its totient is φ = 40016793432.

The previous prime is 40020340993. The next prime is 40020341059. The reversal of 40020341051 is 15014302004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40020341051 - 2³⁴ = 22840471867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40020341059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1756835 + ... + 1779468.

It is an arithmetic number, because the mean of its divisors is an integer number (10005972168).

Almost surely, 2^40020341051 is an apocalyptic number.

40020341051 is a deficient number, since it is larger than the sum of its proper divisors (3547621).

40020341051 is a wasteful number, since it uses less digits than its factorization.

40020341051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547620.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 40020341051 its reverse (15014302004), we get a palindrome (55034643055).

The spelling of 40020341051 in words is "forty billion, twenty million, three hundred forty-one thousand, fifty-one".