1375865513152 has 112 divisors (see below), whose sum is σ = 2950448760000. Its totient is φ = 632816271360.

The previous prime is 1375865513147. The next prime is 1375865513153. The reversal of 1375865513152 is 2513155685731.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 1375865513152.

It is not an unprimeable number, because it can be changed into a prime (1375865513153) 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, 391871077 + ... + 391874587.

It is an arithmetic number, because the mean of its divisors is an integer number (26343292500).

Almost surely, 2^{1375865513152} 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 1375865513152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475224380000).

1375865513152 is an abundant number, since it is smaller than the sum of its proper divisors (1574583246848).

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

1375865513152 is a wasteful number, since it uses less digits than its factorization.

1375865513152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034 (or 5024 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 52.

The spelling of 1375865513152 in words is "one trillion, three hundred seventy-five billion, eight hundred sixty-five million, five hundred thirteen thousand, one hundred fifty-two".