1428511775250 has 256 divisors, whose sum is σ = 4127729808384. Its totient is φ = 322313472000.

The previous prime is 1428511775227. The next prime is 1428511775347. The reversal of 1428511775250 is 525771158241.

It is a self number, because there is not a number n which added to its sum of digits gives 1428511775250.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 130178764 + ... + 130189736.

It is an arithmetic number, because the mean of its divisors is an integer number (16123944564).

Almost surely, 2^{1428511775250} is an apocalyptic number.

1428511775250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428511775250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2063864904192).

1428511775250 is an abundant number, since it is smaller than the sum of its proper divisors (2699218033134).

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

1428511775250 is a wasteful number, since it uses less digits than its factorization.

1428511775250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11318 (or 11308 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 48.

The spelling of 1428511775250 in words is "one trillion, four hundred twenty-eight billion, five hundred eleven million, seven hundred seventy-five thousand, two hundred fifty".