2506787306205 has 64 divisors (see below), whose sum is σ = 4937459466240. Its totient is φ = 1057591270656.

The previous prime is 2506787306113. The next prime is 2506787306239. The reversal of 2506787306205 is 5026037876052.

It is a happy number.

It is not a de Polignac number, because 2506787306205 - 2⁷ = 2506787306077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6527764 + ... + 6901106.

It is an arithmetic number, because the mean of its divisors is an integer number (77147804160).

Almost surely, 2^{2506787306205} is an apocalyptic number.

It is an amenable number.

2506787306205 is a deficient number, since it is larger than the sum of its proper divisors (2430672160035).

2506787306205 is a wasteful number, since it uses less digits than its factorization.

2506787306205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378290.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 2506787306205 in words is "two trillion, five hundred six billion, seven hundred eighty-seven million, three hundred six thousand, two hundred five".