84209987763 has 24 divisors (see below), whose sum is σ = 134675052096. Its totient is φ = 50274615600.

The previous prime is 84209987759. The next prime is 84209987767. The reversal of 84209987763 is 36778990248.

It is an interprime number because it is at equal distance from previous prime (84209987759) and next prime (84209987767).

It is not a de Polignac number, because 84209987763 - 2² = 84209987759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84209987763.

It is not an unprimeable number, because it can be changed into a prime (84209987767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6341173 + ... + 6354438.

It is an arithmetic number, because the mean of its divisors is an integer number (5611460504).

Almost surely, 2^84209987763 is an apocalyptic number.

84209987763 is a deficient number, since it is larger than the sum of its proper divisors (50465064333).

84209987763 is a wasteful number, since it uses less digits than its factorization.

84209987763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12695695 (or 12695692 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 84209987763 in words is "eighty-four billion, two hundred nine million, nine hundred eighty-seven thousand, seven hundred sixty-three".