423717373440 has 240 divisors, whose sum is σ = 1471314544128. Its totient is φ = 112693936128.

The previous prime is 423717373399. The next prime is 423717373451. The reversal of 423717373440 is 44373717324.

423717373440 is a `hidden beast` number, since 4 + 2 + 3 + 71 + 73 + 73 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8800312 + ... + 8848328.

Almost surely, 2^423717373440 is an apocalyptic number.

423717373440 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 423717373440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735657272064).

423717373440 is an abundant number, since it is smaller than the sum of its proper divisors (1047597170688).

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

423717373440 is a wasteful number, since it uses less digits than its factorization.

423717373440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48429 (or 48410 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 45.

The spelling of 423717373440 in words is "four hundred twenty-three billion, seven hundred seventeen million, three hundred seventy-three thousand, four hundred forty".