40511552500 has 120 divisors (see below), whose sum is σ = 94192255080. Its totient is φ = 15187968000.

The previous prime is 40511552489. The next prime is 40511552539. The reversal of 40511552500 is 525511504.

It can be written as a sum of positive squares in 20 ways, for example, as 32380562916 + 8130989584 = 179946^2 + 90172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10920646 + ... + 10924354.

It is an arithmetic number, because the mean of its divisors is an integer number (784935459).

Almost surely, 2^40511552500 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 40511552500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47096127540).

40511552500 is an abundant number, since it is smaller than the sum of its proper divisors (53680702580).

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

40511552500 is a wasteful number, since it uses less digits than its factorization.

40511552500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007 (or 3990 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

It can be divided in two parts, 4051 and 1552500, that added together give a palindrome (1556551).

The spelling of 40511552500 in words is "forty billion, five hundred eleven million, five hundred fifty-two thousand, five hundred".