40474320021 has 12 divisors (see below), whose sum is σ = 58695829920. Its totient is φ = 26875377000.

The previous prime is 40474319993. The next prime is 40474320059. The reversal of 40474320021 is 12002347404.

40474320021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40474320021 - 2¹⁴ = 40474303637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40474320071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8956201 + ... + 8960718.

It is an arithmetic number, because the mean of its divisors is an integer number (4891319160).

Almost surely, 2^40474320021 is an apocalyptic number.

It is an amenable number.

40474320021 is a deficient number, since it is larger than the sum of its proper divisors (18221509899).

40474320021 is a wasteful number, since it uses less digits than its factorization.

40474320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17917176 (or 17917173 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

Adding to 40474320021 its reverse (12002347404), we get a palindrome (52476667425).

The spelling of 40474320021 in words is "forty billion, four hundred seventy-four million, three hundred twenty thousand, twenty-one".