378948616487 has 16 divisors (see below), whose sum is σ = 442340136960. Its totient is φ = 317872392768.

The previous prime is 378948616481. The next prime is 378948616523. The reversal of 378948616487 is 784616849873.

It is not a de Polignac number, because 378948616487 - 2⁴ = 378948616471 is a prime.

It is a super-2 number, since 2×378948616487² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378948616487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378948616481) 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, 3902339 + ... + 3998267.

It is an arithmetic number, because the mean of its divisors is an integer number (27646258560).

Almost surely, 2^378948616487 is an apocalyptic number.

378948616487 is a deficient number, since it is larger than the sum of its proper divisors (63391520473).

378948616487 is a wasteful number, since it uses less digits than its factorization.

378948616487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107990.

The product of its digits is 390168576, while the sum is 71.

The spelling of 378948616487 in words is "three hundred seventy-eight billion, nine hundred forty-eight million, six hundred sixteen thousand, four hundred eighty-seven".