378853513765 has 8 divisors (see below), whose sum is σ = 463202032248. Its totient is φ = 297364267200.

The previous prime is 378853513757. The next prime is 378853513771. The reversal of 378853513765 is 567315358873.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3916506724 + 374937007041 = 62582^2 + 612321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378853513765 - 2³ = 378853513757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714817686 + ... + 714818215.

It is an arithmetic number, because the mean of its divisors is an integer number (57900254031).

Almost surely, 2^378853513765 is an apocalyptic number.

It is an amenable number.

378853513765 is a deficient number, since it is larger than the sum of its proper divisors (84348518483).

378853513765 is a wasteful number, since it uses less digits than its factorization.

378853513765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429635959.

The product of its digits is 63504000, while the sum is 61.

The spelling of 378853513765 in words is "three hundred seventy-eight billion, eight hundred fifty-three million, five hundred thirteen thousand, seven hundred sixty-five".