405317623480 has 128 divisors (see below), whose sum is σ = 1138446420480. Its totient is φ = 126171486720.

The previous prime is 405317623471. The next prime is 405317623483. The reversal of 405317623480 is 84326713504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405317623483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2340354 + ... + 2507566.

It is an arithmetic number, because the mean of its divisors is an integer number (8894112660).

Almost surely, 2^405317623480 is an apocalyptic number.

405317623480 is a gapful number since it is divisible by the number (40) 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 405317623480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569223210240).

405317623480 is an abundant number, since it is smaller than the sum of its proper divisors (733128797000).

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

405317623480 is a wasteful number, since it uses less digits than its factorization.

405317623480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168029 (or 168025 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 405317623480 in words is "four hundred five billion, three hundred seventeen million, six hundred twenty-three thousand, four hundred eighty".