1381382500000 has 96 divisors (see below), whose sum is σ = 3399493445712. Its totient is φ = 552552000000.

The previous prime is 1381382499947. The next prime is 1381382500021. The reversal of 1381382500000 is 52831831.

It can be written as a sum of positive squares in 8 ways, for example, as 1336863187984 + 44519312016 = 1156228^2 + 210996^2 .

It is a super-2 number, since 2×1381382500000² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2223724 + ... + 2776276.

Almost surely, 2^{1381382500000} is an apocalyptic number.

1381382500000 is a gapful number since it is divisible by the number (10) 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 1381382500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699746722856).

1381382500000 is an abundant number, since it is smaller than the sum of its proper divisors (2018110945712).

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

1381382500000 is an frugal number, since it uses more digits than its factorization.

1381382500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552598 (or 552560 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 1381382500000 in words is "one trillion, three hundred eighty-one billion, three hundred eighty-two million, five hundred thousand".