6900988584487 has 4 divisors (see below), whose sum is σ = 7138953708120. Its totient is φ = 6663023460856.

The previous prime is 6900988584437. The next prime is 6900988584493. The reversal of 6900988584487 is 7844858890096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6900988584487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6900988584437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118982561773 + ... + 118982561830.

It is an arithmetic number, because the mean of its divisors is an integer number (1784738427030).

Almost surely, 2^{6900988584487} is an apocalyptic number.

6900988584487 is a deficient number, since it is larger than the sum of its proper divisors (237965123633).

6900988584487 is a wasteful number, since it uses less digits than its factorization.

6900988584487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237965123632.

The product of its (nonzero) digits is 1114767360, while the sum is 76.

The spelling of 6900988584487 in words is "six trillion, nine hundred billion, nine hundred eighty-eight million, five hundred eighty-four thousand, four hundred eighty-seven".