378167218465 has 16 divisors (see below), whose sum is σ = 454484372688. Its totient is φ = 302078140416.

The previous prime is 378167218423. The next prime is 378167218529. The reversal of 378167218465 is 564812761873.

It can be written as a sum of positive squares in 8 ways, for example, as 399640081 + 377767578384 = 19991^2 + 614628^2 .

It is a cyclic number.

It is not a de Polignac number, because 378167218465 - 2²³ = 378158829857 is a prime.

It is a Duffinian number.

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, 27732289 + ... + 27745921.

It is an arithmetic number, because the mean of its divisors is an integer number (28405273293).

Almost surely, 2^378167218465 is an apocalyptic number.

It is an amenable number.

378167218465 is a deficient number, since it is larger than the sum of its proper divisors (76317154223).

378167218465 is a wasteful number, since it uses less digits than its factorization.

378167218465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21588.

The product of its digits is 13547520, while the sum is 58.

The spelling of 378167218465 in words is "three hundred seventy-eight billion, one hundred sixty-seven million, two hundred eighteen thousand, four hundred sixty-five".