5040423502021 has 4 divisors (see below), whose sum is σ = 5085029019852. Its totient is φ = 4995817984192.

The previous prime is 5040423501983. The next prime is 5040423502109. The reversal of 5040423502021 is 1202053240405.

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

It can be written as a sum of positive squares in 2 ways, for example, as 860647699521 + 4179775802500 = 927711^2 + 2044450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5040423502021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5040423509021) 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, 22302758746 + ... + 22302758971.

It is an arithmetic number, because the mean of its divisors is an integer number (1271257254963).

Almost surely, 2^{5040423502021} is an apocalyptic number.

It is an amenable number.

5040423502021 is a deficient number, since it is larger than the sum of its proper divisors (44605517831).

5040423502021 is a wasteful number, since it uses less digits than its factorization.

5040423502021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44605517830.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 5040423502021 its reverse (1202053240405), we get a palindrome (6242476742426).

The spelling of 5040423502021 in words is "five trillion, forty billion, four hundred twenty-three million, five hundred two thousand, twenty-one".