427738923136 has 128 divisors (see below), whose sum is σ = 986776560000. Its totient is φ = 180900864000.

The previous prime is 427738923133. The next prime is 427738923167. The reversal of 427738923136 is 631329837724.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (427738923133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24504940 + ... + 24522388.

It is an arithmetic number, because the mean of its divisors is an integer number (7709191875).

Almost surely, 2^427738923136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427738923136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493388280000).

427738923136 is an abundant number, since it is smaller than the sum of its proper divisors (559037636864).

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

427738923136 is a wasteful number, since it uses less digits than its factorization.

427738923136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17830 (or 17818 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 55.

The spelling of 427738923136 in words is "four hundred twenty-seven billion, seven hundred thirty-eight million, nine hundred twenty-three thousand, one hundred thirty-six".