40050520400 has 120 divisors (see below), whose sum is σ = 105176268288. Its totient is φ = 14535040000.

The previous prime is 40050520399. The next prime is 40050520409. The reversal of 40050520400 is 402505004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40050520409) 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, 2283665 + ... + 2301135.

Almost surely, 2^40050520400 is an apocalyptic number.

40050520400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40050520400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52588134144).

40050520400 is an abundant number, since it is smaller than the sum of its proper divisors (65125747888).

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

40050520400 is a wasteful number, since it uses less digits than its factorization.

40050520400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18021 (or 18010 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The spelling of 40050520400 in words is "forty billion, fifty million, five hundred twenty thousand, four hundred".