423263393280 has 1440 divisors, whose sum is σ = 1854609172416. Its totient is φ = 87319904256.

The previous prime is 423263393263. The next prime is 423263393291. The reversal of 423263393280 is 82393362324.

423263393280 is a `hidden beast` number, since 4 + 2 + 3 + 2 + 633 + 9 + 3 + 2 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

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 polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1444584814 + ... + 1444585106.

Almost surely, 2^423263393280 is an apocalyptic number.

423263393280 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 423263393280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927304586208).

423263393280 is an abundant number, since it is smaller than the sum of its proper divisors (1431345779136).

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

423263393280 is a wasteful number, since it uses less digits than its factorization.

423263393280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 45.

The spelling of 423263393280 in words is "four hundred twenty-three billion, two hundred sixty-three million, three hundred ninety-three thousand, two hundred eighty".