43420284864 has 168 divisors, whose sum is σ = 136002247680. Its totient is φ = 13135219200.

The previous prime is 43420284839. The next prime is 43420284871. The reversal of 43420284864 is 46848202434.

43420284864 is a `hidden beast` number, since 434 + 202 + 8 + 4 + 8 + 6 + 4 = 666.

It is a super-2 number, since 2×43420284864² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3916449 + ... + 3927519.

Almost surely, 2^43420284864 is an apocalyptic number.

43420284864 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43420284864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68001123840).

43420284864 is an abundant number, since it is smaller than the sum of its proper divisors (92581962816).

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

43420284864 is a wasteful number, since it uses less digits than its factorization.

43420284864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719 (or 11706 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 45.

The spelling of 43420284864 in words is "forty-three billion, four hundred twenty million, two hundred eighty-four thousand, eight hundred sixty-four".