40533153444 has 72 divisors (see below), whose sum is σ = 117127378368. Its totient is φ = 11577775680.

The previous prime is 40533153443. The next prime is 40533153457. The reversal of 40533153444 is 44435133504.

40533153444 is a `hidden beast` number, since 4 + 0 + 53 + 31 + 534 + 44 = 666.

It is a super-2 number, since 2×40533153444² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40533153399 and 40533153408.

It is not an unprimeable number, because it can be changed into a prime (40533153443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1011274 + ... + 1050590.

It is an arithmetic number, because the mean of its divisors is an integer number (1626769144).

Almost surely, 2^40533153444 is an apocalyptic number.

It is an amenable number.

40533153444 is an abundant number, since it is smaller than the sum of its proper divisors (76594224924).

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

40533153444 is a wasteful number, since it uses less digits than its factorization.

40533153444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43425 (or 43420 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 40533153444 its reverse (44435133504), we get a palindrome (84968286948).

The spelling of 40533153444 in words is "forty billion, five hundred thirty-three million, one hundred fifty-three thousand, four hundred forty-four".