678000218377 has 16 divisors (see below), whose sum is σ = 695627412480. Its totient is φ = 660459420432.

The previous prime is 678000218359. The next prime is 678000218431. The reversal of 678000218377 is 773812000876.

It is a cyclic number.

It is not a de Polignac number, because 678000218377 - 2¹⁹ = 677999694089 is a prime.

It is a super-2 number, since 2×678000218377² (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 678000218377.

It is not an unprimeable number, because it can be changed into a prime (678000218477) 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, 33709558 + ... + 33729664.

It is an arithmetic number, because the mean of its divisors is an integer number (43476713280).

Almost surely, 2^678000218377 is an apocalyptic number.

It is an amenable number.

678000218377 is a deficient number, since it is larger than the sum of its proper divisors (17627194103).

678000218377 is a wasteful number, since it uses less digits than its factorization.

678000218377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22212.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 678000218377 in words is "six hundred seventy-eight billion, two hundred eighteen thousand, three hundred seventy-seven".