427223517520 has 160 divisors (see below), whose sum is σ = 1031541477120. Its totient is φ = 164443668480.

The previous prime is 427223517467. The next prime is 427223517547. The reversal of 427223517520 is 25715322724.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76409925 + ... + 76415515.

It is an arithmetic number, because the mean of its divisors is an integer number (6447134232).

Almost surely, 2^427223517520 is an apocalyptic number.

427223517520 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 427223517520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515770738560).

427223517520 is an abundant number, since it is smaller than the sum of its proper divisors (604317959600).

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

427223517520 is a wasteful number, since it uses less digits than its factorization.

427223517520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973 (or 5967 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 427223517520 in words is "four hundred twenty-seven billion, two hundred twenty-three million, five hundred seventeen thousand, five hundred twenty".