84011438431 has 8 divisors (see below), whose sum is σ = 86726662784. Its totient is φ = 81296537760.

The previous prime is 84011438363. The next prime is 84011438443. The reversal of 84011438431 is 13483411048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84011438431 - 2¹⁵ = 84011405663 is a prime.

It is a super-2 number, since 2×84011438431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84011438131) 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, 516745 + ... + 659581.

It is an arithmetic number, because the mean of its divisors is an integer number (10840832848).

Almost surely, 2^84011438431 is an apocalyptic number.

84011438431 is a deficient number, since it is larger than the sum of its proper divisors (2715224353).

84011438431 is a wasteful number, since it uses less digits than its factorization.

84011438431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161841.

The product of its (nonzero) digits is 36864, while the sum is 37.

Adding to 84011438431 its reverse (13483411048), we get a palindrome (97494849479).

The spelling of 84011438431 in words is "eighty-four billion, eleven million, four hundred thirty-eight thousand, four hundred thirty-one".