84464838381 has 128 divisors (see below), whose sum is σ = 146614026240. Its totient is φ = 41988844800.

The previous prime is 84464838361. The next prime is 84464838397. The reversal of 84464838381 is 18383846448.

It is not a de Polignac number, because 84464838381 - 2⁵ = 84464838349 is a prime.

It is a super-2 number, since 2×84464838381² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84464838361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 161500386 + ... + 161500908.

It is an arithmetic number, because the mean of its divisors is an integer number (1145422080).

Almost surely, 2^84464838381 is an apocalyptic number.

It is an amenable number.

84464838381 is a deficient number, since it is larger than the sum of its proper divisors (62149187859).

84464838381 is a wasteful number, since it uses less digits than its factorization.

84464838381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its digits is 14155776, while the sum is 57.

The spelling of 84464838381 in words is "eighty-four billion, four hundred sixty-four million, eight hundred thirty-eight thousand, three hundred eighty-one".