423494780544 has 960 divisors, whose sum is σ = 1480620372000. Its totient is φ = 119723028480.

The previous prime is 423494780539. The next prime is 423494780551. The reversal of 423494780544 is 445087494324.

423494780544 is a `hidden beast` number, since 4 + 2 + 3 + 4 + 94 + 7 + 8 + 0 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 119 ways as a sum of consecutive naturals, for example, 2598127407 + ... + 2598127569.

Almost surely, 2^423494780544 is an apocalyptic number.

423494780544 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 423494780544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740310186000).

423494780544 is an abundant number, since it is smaller than the sum of its proper divisors (1057125591456).

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

423494780544 is a wasteful number, since it uses less digits than its factorization.

423494780544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 54.

The spelling of 423494780544 in words is "four hundred twenty-three billion, four hundred ninety-four million, seven hundred eighty thousand, five hundred forty-four".