784997888799487 has 12 divisors (see below), whose sum is σ = 862871310876960. Its totient is φ = 713615924843360.

The previous prime is 784997888799331. The next prime is 784997888799499.

784997888799487 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-784997888799487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (784997888199487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79496662 + ... + 88824067.

It is an arithmetic number, because the mean of its divisors is an integer number (71905942573080).

Almost surely, 2^{784997888799487} is an apocalyptic number.

784997888799487 is a deficient number, since it is larger than the sum of its proper divisors (77873422077473).

784997888799487 is a wasteful number, since it uses less digits than its factorization.

784997888799487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168359294 (or 168359283 counting only the distinct ones).

The product of its digits is 8259088416768, while the sum is 112.

The spelling of 784997888799487 in words is "seven hundred eighty-four trillion, nine hundred ninety-seven billion, eight hundred eighty-eight million, seven hundred ninety-nine thousand, four hundred eighty-seven".