1388757328050 has 96 divisors (see below), whose sum is σ = 3626745016320. Its totient is φ = 350712590400.

The previous prime is 1388757328037. The next prime is 1388757328093. The reversal of 1388757328050 is 508237578831.

It is a super-3 number, since 3×1388757328050³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7636479 + ... + 7816221.

It is an arithmetic number, because the mean of its divisors is an integer number (37778593920).

Almost surely, 2^{1388757328050} is an apocalyptic number.

1388757328050 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 1388757328050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1813372508160).

1388757328050 is an abundant number, since it is smaller than the sum of its proper divisors (2237987688270).

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

1388757328050 is a wasteful number, since it uses less digits than its factorization.

1388757328050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182488 (or 182483 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 1388757328050 in words is "one trillion, three hundred eighty-eight billion, seven hundred fifty-seven million, three hundred twenty-eight thousand, fifty".