40534451220 has 24 divisors (see below), whose sum is σ = 113496463584. Its totient is φ = 10809186976.

The previous prime is 40534451147. The next prime is 40534451263. The reversal of 40534451220 is 2215443504.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337787034 + ... + 337787153.

It is an arithmetic number, because the mean of its divisors is an integer number (4729019316).

Almost surely, 2^40534451220 is an apocalyptic number.

It is an amenable number.

40534451220 is an abundant number, since it is smaller than the sum of its proper divisors (72962012364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40534451220 is a wasteful number, since it uses less digits than its factorization.

40534451220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675574199 (or 675574197 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 40534451220 its reverse (2215443504), we get a palindrome (42749894724).

The spelling of 40534451220 in words is "forty billion, five hundred thirty-four million, four hundred fifty-one thousand, two hundred twenty".