2687519851864 has 64 divisors (see below), whose sum is σ = 5450168908800. Its totient is φ = 1238062402944.

The previous prime is 2687519851813. The next prime is 2687519851871. The reversal of 2687519851864 is 4681589157862.

It is a junction number, because it is equal to n+sod(n) for n = 2687519851793 and 2687519851802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12303907 + ... + 12520429.

It is an arithmetic number, because the mean of its divisors is an integer number (85158889200).

Almost surely, 2^{2687519851864} is an apocalyptic number.

It is an amenable number.

2687519851864 is an abundant number, since it is smaller than the sum of its proper divisors (2762649056936).

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

2687519851864 is a wasteful number, since it uses less digits than its factorization.

2687519851864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218792 (or 218788 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 70.

The spelling of 2687519851864 in words is "two trillion, six hundred eighty-seven billion, five hundred nineteen million, eight hundred fifty-one thousand, eight hundred sixty-four".