84738689644 has 24 divisors (see below), whose sum is σ = 171519280128. Its totient is φ = 35879031120.

The previous prime is 84738689603. The next prime is 84738689647. The reversal of 84738689644 is 44698683748.

It is a self number, because there is not a number n which added to its sum of digits gives 84738689644.

It is not an unprimeable number, because it can be changed into a prime (84738689647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18228892 + ... + 18233539.

It is an arithmetic number, because the mean of its divisors is an integer number (7146636672).

Almost surely, 2^84738689644 is an apocalyptic number.

It is an amenable number.

84738689644 is an abundant number, since it is smaller than the sum of its proper divisors (86780590484).

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

84738689644 is a wasteful number, since it uses less digits than its factorization.

84738689644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36462525 (or 36462523 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 67.

The spelling of 84738689644 in words is "eighty-four billion, seven hundred thirty-eight million, six hundred eighty-nine thousand, six hundred forty-four".