40003055520 has 48 divisors (see below), whose sum is σ = 126009626400. Its totient is φ = 10667481344.

The previous prime is 40003055483. The next prime is 40003055537. The reversal of 40003055520 is 2555030004.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41669370 + ... + 41670329.

It is an arithmetic number, because the mean of its divisors is an integer number (2625200550).

Almost surely, 2^40003055520 is an apocalyptic number.

40003055520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40003055520 is an abundant number, since it is smaller than the sum of its proper divisors (86006570880).

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

40003055520 is a wasteful number, since it uses less digits than its factorization.

40003055520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83339717 (or 83339709 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

Adding to 40003055520 its reverse (2555030004), we get a palindrome (42558085524).

The spelling of 40003055520 in words is "forty billion, three million, fifty-five thousand, five hundred twenty".