114778128438 has 64 divisors (see below), whose sum is σ = 270300913920. Its totient is φ = 35977527936.

The previous prime is 114778128431. The next prime is 114778128449. The reversal of 114778128438 is 834821877411.

It is a happy number.

114778128438 is a `hidden beast` number, since 1 + 1 + 477 + 8 + 128 + 43 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (114778128431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1013881 + ... + 1121387.

It is an arithmetic number, because the mean of its divisors is an integer number (4223451780).

Almost surely, 2^114778128438 is an apocalyptic number.

114778128438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 114778128438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135150456960).

114778128438 is an abundant number, since it is smaller than the sum of its proper divisors (155522785482).

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

114778128438 is a wasteful number, since it uses less digits than its factorization.

114778128438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108698 (or 108692 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The spelling of 114778128438 in words is "one hundred fourteen billion, seven hundred seventy-eight million, one hundred twenty-eight thousand, four hundred thirty-eight".