2685878590542 has 64 divisors (see below), whose sum is σ = 6159114201600. Its totient is φ = 764902293120.

The previous prime is 2685878590537. The next prime is 2685878590547. The reversal of 2685878590542 is 2450958785862.

It is an interprime number because it is at equal distance from previous prime (2685878590537) and next prime (2685878590547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685878590547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17017084 + ... + 17174192.

It is an arithmetic number, because the mean of its divisors is an integer number (96236159400).

Almost surely, 2^{2685878590542} is an apocalyptic number.

2685878590542 is an abundant number, since it is smaller than the sum of its proper divisors (3473235611058).

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

2685878590542 is a wasteful number, since it uses less digits than its factorization.

2685878590542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158441.

The product of its (nonzero) digits is 387072000, while the sum is 69.

The spelling of 2685878590542 in words is "two trillion, six hundred eighty-five billion, eight hundred seventy-eight million, five hundred ninety thousand, five hundred forty-two".