2520440131985 has 8 divisors (see below), whose sum is σ = 3027405926976. Its totient is φ = 2014433593200.

The previous prime is 2520440131933. The next prime is 2520440131987. The reversal of 2520440131985 is 5891310440252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2520440131985 - 2⁶ = 2520440131921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520440131987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239808269 + ... + 239818778.

It is an arithmetic number, because the mean of its divisors is an integer number (378425740872).

Almost surely, 2^{2520440131985} is an apocalyptic number.

It is an amenable number.

2520440131985 is a deficient number, since it is larger than the sum of its proper divisors (506965794991).

2520440131985 is a wasteful number, since it uses less digits than its factorization.

2520440131985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479628103.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 2520440131985 in words is "two trillion, five hundred twenty billion, four hundred forty million, one hundred thirty-one thousand, nine hundred eighty-five".