2581007802805 has 16 divisors (see below), whose sum is σ = 3106975132224. Its totient is φ = 2058297373440.

The previous prime is 2581007802797. The next prime is 2581007802833. The reversal of 2581007802805 is 5082087001852.

It is not a de Polignac number, because 2581007802805 - 2³ = 2581007802797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12987469 + ... + 13184701.

It is an arithmetic number, because the mean of its divisors is an integer number (194185945764).

Almost surely, 2^{2581007802805} is an apocalyptic number.

It is an amenable number.

2581007802805 is a deficient number, since it is larger than the sum of its proper divisors (525967329419).

2581007802805 is a wasteful number, since it uses less digits than its factorization.

2581007802805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205476.

The product of its (nonzero) digits is 358400, while the sum is 46.

The spelling of 2581007802805 in words is "two trillion, five hundred eighty-one billion, seven million, eight hundred two thousand, eight hundred five".