40345544052 has 144 divisors (see below), whose sum is σ = 112162482432. Its totient is φ = 12126723840.

The previous prime is 40345544051. The next prime is 40345544059. The reversal of 40345544052 is 25044554304.

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 = 40345543998 and 40345544016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40345544051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36118998 + ... + 36120114.

It is an arithmetic number, because the mean of its divisors is an integer number (778906128).

Almost surely, 2^40345544052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40345544052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56081241216).

40345544052 is an abundant number, since it is smaller than the sum of its proper divisors (71816938380).

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

40345544052 is a wasteful number, since it uses less digits than its factorization.

40345544052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

The spelling of 40345544052 in words is "forty billion, three hundred forty-five million, five hundred forty-four thousand, fifty-two".