40450511010 has 256 divisors, whose sum is σ = 124993290240. Its totient is φ = 8143027200.

The previous prime is 40450510967. The next prime is 40450511011. The reversal of 40450511010 is 1011505404.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40450511011) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 44015331 + ... + 44016249.

It is an arithmetic number, because the mean of its divisors is an integer number (488255040).

Almost surely, 2^40450511010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40450511010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62496645120).

40450511010 is an abundant number, since it is smaller than the sum of its proper divisors (84542779230).

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

40450511010 is a wasteful number, since it uses less digits than its factorization.

40450511010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673.

The product of its (nonzero) digits is 400, while the sum is 21.

The spelling of 40450511010 in words is "forty billion, four hundred fifty million, five hundred eleven thousand, ten".