40430509020 has 192 divisors, whose sum is σ = 140928076800. Its totient is φ = 9536382720.

The previous prime is 40430508971. The next prime is 40430509027. The reversal of 40430509020 is 2090503404.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430509027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127801 + ... + 311759.

It is an arithmetic number, because the mean of its divisors is an integer number (734000400).

Almost surely, 2^40430509020 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 40430509020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70464038400).

40430509020 is an abundant number, since it is smaller than the sum of its proper divisors (100497567780).

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

40430509020 is a wasteful number, since it uses less digits than its factorization.

40430509020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184025 (or 184017 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 40430509020 in words is "forty billion, four hundred thirty million, five hundred nine thousand, twenty".