534403616440 has 64 divisors (see below), whose sum is σ = 1231891436160. Its totient is φ = 208532257920.

The previous prime is 534403616437. The next prime is 534403616443. The reversal of 534403616440 is 44616304435.

It is an interprime number because it is at equal distance from previous prime (534403616437) and next prime (534403616443).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 534403616393 and 534403616402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534403616443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1203367 + ... + 1586473.

It is an arithmetic number, because the mean of its divisors is an integer number (19248303690).

Almost surely, 2^534403616440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 534403616440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615945718080).

534403616440 is an abundant number, since it is smaller than the sum of its proper divisors (697487819720).

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

534403616440 is a wasteful number, since it uses less digits than its factorization.

534403616440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383972 (or 383968 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 534403616440 in words is "five hundred thirty-four billion, four hundred three million, six hundred sixteen thousand, four hundred forty".