40451320252 has 36 divisors (see below), whose sum is σ = 82365155040. Its totient is φ = 17332527744.

The previous prime is 40451320241. The next prime is 40451320289. The reversal of 40451320252 is 25202315404.

40451320252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 40451320252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005949 + ... + 1045387.

Almost surely, 2^40451320252 is an apocalyptic number.

It is an amenable number.

40451320252 is an abundant number, since it is smaller than the sum of its proper divisors (41913834788).

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

40451320252 is a wasteful number, since it uses less digits than its factorization.

40451320252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44690 (or 44681 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 40451320252 its reverse (25202315404), we get a palindrome (65653635656).

The spelling of 40451320252 in words is "forty billion, four hundred fifty-one million, three hundred twenty thousand, two hundred fifty-two".