378309996255 has 64 divisors (see below), whose sum is σ = 614517995520. Its totient is φ = 198716184576.

The previous prime is 378309996217. The next prime is 378309996257. The reversal of 378309996255 is 552699903873.

It is a happy number.

It is not a de Polignac number, because 378309996255 - 2¹⁵ = 378309963487 is a prime.

It is a super-2 number, since 2×378309996255² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378309996257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 391219782 + ... + 391220748.

It is an arithmetic number, because the mean of its divisors is an integer number (9601843680).

Almost surely, 2^378309996255 is an apocalyptic number.

378309996255 is a deficient number, since it is larger than the sum of its proper divisors (236207999265).

378309996255 is a wasteful number, since it uses less digits than its factorization.

378309996255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its (nonzero) digits is 110224800, while the sum is 66.

The spelling of 378309996255 in words is "three hundred seventy-eight billion, three hundred nine million, nine hundred ninety-six thousand, two hundred fifty-five".