378333970561 has 16 divisors (see below), whose sum is σ = 397638259200. Its totient is φ = 359488454400.

The previous prime is 378333970519. The next prime is 378333970577. The reversal of 378333970561 is 165079333873.

It is a cyclic number.

It is not a de Polignac number, because 378333970561 - 2¹⁹ = 378333446273 is a prime.

It is a super-2 number, since 2×378333970561² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378333970501) 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, 1391481 + ... + 1641001.

It is an arithmetic number, because the mean of its divisors is an integer number (24852391200).

Almost surely, 2^378333970561 is an apocalyptic number.

378333970561 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

378333970561 is a deficient number, since it is larger than the sum of its proper divisors (19304288639).

378333970561 is a wasteful number, since it uses less digits than its factorization.

378333970561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250440.

The product of its (nonzero) digits is 8573040, while the sum is 55.

The spelling of 378333970561 in words is "three hundred seventy-eight billion, three hundred thirty-three million, nine hundred seventy thousand, five hundred sixty-one".